11220120331212 has 24 divisors (see below), whose sum is σ = 28194148524976. Its totient is φ = 3452344717248.

The previous prime is 11220120331193. The next prime is 11220120331249. The reversal of 11220120331212 is 21213302102211.

It is a super-2 number, since 2×11220120331212² (a number of 27 digits) contains 22 as substring.

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, 35961923983 + ... + 35961924294.

Almost surely, 2^{11220120331212} is an apocalyptic number.

11220120331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220120331212 is an abundant number, since it is smaller than the sum of its proper divisors (16974028193764).

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

11220120331212 is a wasteful number, since it uses less digits than its factorization.

11220120331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71923848297 (or 71923848295 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 11220120331212 its reverse (21213302102211), we get a palindrome (32433422433423).

The spelling of 11220120331212 in words is "eleven trillion, two hundred twenty billion, one hundred twenty million, three hundred thirty-one thousand, two hundred twelve".