1222100100120 has 64 divisors (see below), whose sum is σ = 3666941428320. Its totient is φ = 325836370944.

The previous prime is 1222100100101. The next prime is 1222100100173. The reversal of 1222100100120 is 210010012221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1222100100096 and 1222100100105.

It is a congruent number.

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, 199147 + ... + 1576026.

Almost surely, 2^{1222100100120} is an apocalyptic number.

1222100100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222100100120 is an abundant number, since it is smaller than the sum of its proper divisors (2444841328200).

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

1222100100120 is a wasteful number, since it uses less digits than its factorization.

1222100100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780924 (or 1780920 counting only the distinct ones).

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

Adding to 1222100100120 its reverse (210010012221), we get a palindrome (1432110112341).

The spelling of 1222100100120 in words is "one trillion, two hundred twenty-two billion, one hundred million, one hundred thousand, one hundred twenty".