120000012212100 has 72 divisors (see below), whose sum is σ = 356583820105408. Its totient is φ = 31135138300800.

The previous prime is 120000012212033. The next prime is 120000012212123. The reversal of 120000012212100 is 1212210000021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5405394856 + ... + 5405417055.

Almost surely, 2^{120000012212100} is an apocalyptic number.

120000012212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120000012212100 is an abundant number, since it is smaller than the sum of its proper divisors (236583807893308).

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

120000012212100 is a wasteful number, since it uses less digits than its factorization.

120000012212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10810811965 (or 10810811958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120000012212100 its reverse (1212210000021), we get a palindrome (121212222212121).

The spelling of 120000012212100 in words is "one hundred twenty trillion, twelve million, two hundred twelve thousand, one hundred".