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1000001121020 = 225116763672107
BaseRepresentation
bin11101000110101001011…
…01100010101011111100
310112121011210112101020022
432203110231202223330
5112341000241333040
62043221050311312
7132150650165216
oct16432455425374
93477153471208
101000001121020
11356109621160
12141982428538
13733b859bb75
14365866595b6
151b02b8d86b5
hexe8d4b62afc

1000001121020 has 48 divisors (see below), whose sum is σ = 2291253810048. Its totient is φ = 363582461760.

The previous prime is 1000001121019. The next prime is 1000001121079. The reversal of 1000001121020 is 201211000001.

It is a junction number, because it is equal to n+sod(n) for n = 1000001120989 and 1000001121007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151807 + ... + 1823913.

It is an arithmetic number, because the mean of its divisors is an integer number (47734454376).

Almost surely, 21000001121020 is an apocalyptic number.

1000001121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000001121020 is an abundant number, since it is smaller than the sum of its proper divisors (1291252689028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000001121020 is a wasteful number, since it uses less digits than its factorization.

1000001121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678890 (or 678888 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000001121020 its reverse (201211000001), we get a palindrome (1201212121021).

The spelling of 1000001121020 in words is "one trillion, one million, one hundred twenty-one thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 6763 13526 27052 33815 67630 74393 135260 148786 297572 371965 672107 743930 1344214 1487860 2688428 3360535 6721070 7393177 13442140 14786354 29572708 36965885 73931770 147863540 4545459641 9090919282 18181838564 22727298205 45454596410 50000056051 90909192820 100000112102 200000224204 250000280255 500000560510 1000001121020