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12100000211020 = 2251375143996801
BaseRepresentation
bin1011000000010100000000…
…1101101110000001001100
31120211202012211010011111201
42300011000031232001030
53041221300023223040
641422355141355244
72356124166540151
oct260050015560114
946752184104451
1012100000211020
1139456437444a7
121435089708b24
1369a043274397
142db900a96228
1515eb3719ca9a
hexb014036e04c

12100000211020 has 24 divisors (see below), whose sum is σ = 25411848886368. Its totient is φ = 4839648000000.

The previous prime is 12100000211003. The next prime is 12100000211113. The reversal of 12100000211020 is 2011200000121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12100000210988 and 12100000211006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21723381 + ... + 22273420.

It is an arithmetic number, because the mean of its divisors is an integer number (1058827036932).

Almost surely, 212100000211020 is an apocalyptic number.

12100000211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100000211020 is an abundant number, since it is smaller than the sum of its proper divisors (13311848675348).

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

12100000211020 is a wasteful number, since it uses less digits than its factorization.

12100000211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44010561 (or 44010559 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12100000211020 its reverse (2011200000121), we get a palindrome (14111200211141).

The spelling of 12100000211020 in words is "twelve trillion, one hundred billion, two hundred eleven thousand, twenty".

Divisors: 1 2 4 5 10 20 13751 27502 55004 68755 137510 275020 43996801 87993602 175987204 219984005 439968010 879936020 605000010551 1210000021102 2420000042204 3025000052755 6050000105510 12100000211020