12100021121012 has 24 divisors (see below), whose sum is σ = 23148265916160. Its totient is φ = 5488527316160.

The previous prime is 12100021120997. The next prime is 12100021121029. The reversal of 12100021121012 is 21012112000121.

It is a super-2 number, since 2×12100021121012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287035793 + ... + 287077944.

It is an arithmetic number, because the mean of its divisors is an integer number (964511079840).

Almost surely, 2^{12100021121012} is an apocalyptic number.

It is an amenable number.

12100021121012 is a deficient number, since it is larger than the sum of its proper divisors (11048244795148).

12100021121012 is a wasteful number, since it uses less digits than its factorization.

12100021121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574114231 (or 574114229 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12100021121012 its reverse (21012112000121), we get a palindrome (33112133121133).

The spelling of 12100021121012 in words is "twelve trillion, one hundred billion, twenty-one million, one hundred twenty-one thousand, twelve".