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1021000122012 = 22313431511815569
BaseRepresentation
bin11101101101110000101…
…10010111111010011100
310121121101020212011012210
432312320112113322130
5113212002012401022
62101012504000420
7133523222562363
oct16667026277234
93547336764183
101021000122012
11364004a51432
12145a62a60110
1375383c24040
14375b94ac7da
151b85a1d9a0c
hexedb8597e9c

1021000122012 has 192 divisors, whose sum is σ = 2657718103040. Its totient is φ = 303077376000.

The previous prime is 1021000122001. The next prime is 1021000122031. The reversal of 1021000122012 is 2102210001201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183333564 + ... + 183339132.

Almost surely, 21021000122012 is an apocalyptic number.

1021000122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021000122012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328859051520).

1021000122012 is an abundant number, since it is smaller than the sum of its proper divisors (1636717981028).

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

1021000122012 is a wasteful number, since it uses less digits than its factorization.

1021000122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5964 (or 5962 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021000122012 its reverse (2102210001201), we get a palindrome (3123210123213).

The spelling of 1021000122012 in words is "one trillion, twenty-one billion, one hundred twenty-two thousand, twelve".