12100520000 has 70 divisors (see below), whose sum is σ = 30005456118. Its totient is φ = 4840192000.

The previous prime is 12100519999. The next prime is 12100520009. The reversal of 12100520000 is 2500121.

It can be written as a sum of positive squares in 5 ways, for example, as 1577042944 + 10523477056 = 39712^2 + 102584^2 .

It is not an unprimeable number, because it can be changed into a prime (12100520009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 111257 + ... + 191256.

Almost surely, 2^12100520000 is an apocalyptic number.

12100520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100520000 is an abundant number, since it is smaller than the sum of its proper divisors (17904936118).

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

12100520000 is an frugal number, since it uses more digits than its factorization.

12100520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302545 (or 302520 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The spelling of 12100520000 in words is "twelve billion, one hundred million, five hundred twenty thousand".