12121100023100 has 36 divisors (see below), whose sum is σ = 26346119615424. Its totient is φ = 4840452439680.

The previous prime is 12121100023093. The next prime is 12121100023129. The reversal of 12121100023100 is 132000112121.

12121100023100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12121100023100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99783617 + ... + 99905016.

It is an arithmetic number, because the mean of its divisors is an integer number (731836655984).

Almost surely, 2^{12121100023100} is an apocalyptic number.

12121100023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121100023100 is an abundant number, since it is smaller than the sum of its proper divisors (14225019592324).

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

12121100023100 is a wasteful number, since it uses less digits than its factorization.

12121100023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199689254 (or 199689247 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12121100023100 its reverse (132000112121), we get a palindrome (12253100135221).

The spelling of 12121100023100 in words is "twelve trillion, one hundred twenty-one billion, one hundred million, twenty-three thousand, one hundred".