1220120100212 has 24 divisors (see below), whose sum is σ = 2299534748616. Its totient is φ = 563113340928.

The previous prime is 1220120100203. The next prime is 1220120100247. The reversal of 1220120100212 is 2120010210221.

It can be written as a sum of positive squares in 4 ways, for example, as 76143076 + 1220043957136 = 8726^2 + 1104556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221788 + ... + 1983180.

It is an arithmetic number, because the mean of its divisors is an integer number (95813947859).

Almost surely, 2^{1220120100212} is an apocalyptic number.

It is an amenable number.

1220120100212 is a deficient number, since it is larger than the sum of its proper divisors (1079414648404).

1220120100212 is a wasteful number, since it uses less digits than its factorization.

1220120100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792227 (or 792225 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220120100212 its reverse (2120010210221), we get a palindrome (3340130310433).

The spelling of 1220120100212 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred thousand, two hundred twelve".