1213220010120 has 64 divisors (see below), whose sum is σ = 3724303302720. Its totient is φ = 316001489664.

The previous prime is 1213220010109. The next prime is 1213220010131. The reversal of 1213220010120 is 210100223121.

It is an interprime number because it is at equal distance from previous prime (1213220010109) and next prime (1213220010131).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1213220010120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117554919 + ... + 117565238.

It is an arithmetic number, because the mean of its divisors is an integer number (58192239105).

Almost surely, 2^{1213220010120} is an apocalyptic number.

1213220010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213220010120 is an abundant number, since it is smaller than the sum of its proper divisors (2511083292600).

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

1213220010120 is a wasteful number, since it uses less digits than its factorization.

1213220010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235120214 (or 235120210 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1213220010120 its reverse (210100223121), we get a palindrome (1423320233241).

The spelling of 1213220010120 in words is "one trillion, two hundred thirteen billion, two hundred twenty million, ten thousand, one hundred twenty".