1220012212120 has 32 divisors (see below), whose sum is σ = 2956183438320. Its totient is φ = 450466047360.

The previous prime is 1220012212091. The next prime is 1220012212141. The reversal of 1220012212120 is 212122100221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220012212094 and 1220012212103.

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, 1173088146 + ... + 1173089185.

Almost surely, 2^{1220012212120} is an apocalyptic number.

1220012212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220012212120 is an abundant number, since it is smaller than the sum of its proper divisors (1736171226200).

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

1220012212120 is a wasteful number, since it uses less digits than its factorization.

1220012212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346177355 (or 2346177351 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220012212120 its reverse (212122100221), we get a palindrome (1432134312341).

The spelling of 1220012212120 in words is "one trillion, two hundred twenty billion, twelve million, two hundred twelve thousand, one hundred twenty".