12101204920 has 64 divisors (see below), whose sum is σ = 31129920000. Its totient is φ = 4147313280.

The previous prime is 12101204909. The next prime is 12101204957. The reversal of 12101204920 is 2940210121.

It is a junction number, because it is equal to n+sod(n) for n = 12101204891 and 12101204900.

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, 832515 + ... + 846925.

It is an arithmetic number, because the mean of its divisors is an integer number (486405000).

Almost surely, 2^12101204920 is an apocalyptic number.

12101204920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101204920 is an abundant number, since it is smaller than the sum of its proper divisors (19028715080).

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

12101204920 is a wasteful number, since it uses less digits than its factorization.

12101204920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17428 (or 17424 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 12101204920 in words is "twelve billion, one hundred one million, two hundred four thousand, nine hundred twenty".