12120012011100 has 108 divisors (see below), whose sum is σ = 40792497618264. Its totient is φ = 2770288456320.

The previous prime is 12120012011099. The next prime is 12120012011113. The reversal of 12120012011100 is 111021002121.

It is a super-2 number, since 2×12120012011100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 412230607 + ... + 412260006.

Almost surely, 2^{12120012011100} is an apocalyptic number.

12120012011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120012011100 is an abundant number, since it is smaller than the sum of its proper divisors (28672485607164).

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

12120012011100 is a wasteful number, since it uses less digits than its factorization.

12120012011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824490644 (or 824490630 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12120012011100 its reverse (111021002121), we get a palindrome (12231033013221).

The spelling of 12120012011100 in words is "twelve trillion, one hundred twenty billion, twelve million, eleven thousand, one hundred".