11312020120 has 32 divisors (see below), whose sum is σ = 26791628400. Its totient is φ = 4286659968.

The previous prime is 11312020091. The next prime is 11312020129. The reversal of 11312020120 is 2102021311.

It is a self number, because there is not a number n which added to its sum of digits gives 11312020120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312020129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7441359 + ... + 7442878.

Almost surely, 2^11312020120 is an apocalyptic number.

11312020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11312020120 is an abundant number, since it is smaller than the sum of its proper divisors (15479608280).

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

11312020120 is a wasteful number, since it uses less digits than its factorization.

11312020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14884267 (or 14884263 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11312020120 its reverse (2102021311), we get a palindrome (13414041431).

The spelling of 11312020120 in words is "eleven billion, three hundred twelve million, twenty thousand, one hundred twenty".