12102120001000 has 64 divisors (see below), whose sum is σ = 28363841775360. Its totient is φ = 4833176040000.

The previous prime is 12102120000973. The next prime is 12102120001079. The reversal of 12102120001000 is 10002120121.

It is a super-2 number, since 2×12102120001000² (a number of 27 digits) contains 22 as substring.

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

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, 8958636 + ... + 10220635.

It is an arithmetic number, because the mean of its divisors is an integer number (443185027740).

Almost surely, 2^{12102120001000} is an apocalyptic number.

12102120001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102120001000 is an abundant number, since it is smaller than the sum of its proper divisors (16261721774360).

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

12102120001000 is a wasteful number, since it uses less digits than its factorization.

12102120001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19179923 (or 19179909 counting only the distinct ones).

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

Adding to 12102120001000 its reverse (10002120121), we get a palindrome (12112122121121).

The spelling of 12102120001000 in words is "twelve trillion, one hundred two billion, one hundred twenty million, one thousand".