1213110011020 has 24 divisors (see below), whose sum is σ = 2547628930224. Its totient is φ = 485225355456.

The previous prime is 1213110011017. The next prime is 1213110011081. The reversal of 1213110011020 is 201100113121.

It is a happy 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, 626062 + ... + 1678741.

It is an arithmetic number, because the mean of its divisors is an integer number (106151205426).

Almost surely, 2^{1213110011020} is an apocalyptic number.

1213110011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213110011020 is an abundant number, since it is smaller than the sum of its proper divisors (1334518919204).

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

1213110011020 is a wasteful number, since it uses less digits than its factorization.

1213110011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331129 (or 2331127 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1213110011020 its reverse (201100113121), we get a palindrome (1414210124141).

The spelling of 1213110011020 in words is "one trillion, two hundred thirteen billion, one hundred ten million, eleven thousand, twenty".