11212111031320 has 16 divisors (see below), whose sum is σ = 25227249820560. Its totient is φ = 4484844412512.

The previous prime is 11212111031293. The next prime is 11212111031321. The reversal of 11212111031320 is 2313011121211.

It is a super-2 number, since 2×11212111031320² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212111031321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140151387852 + ... + 140151387931.

It is an arithmetic number, because the mean of its divisors is an integer number (1576703113785).

Almost surely, 2^{11212111031320} is an apocalyptic number.

11212111031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212111031320 is an abundant number, since it is smaller than the sum of its proper divisors (14015138789240).

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

11212111031320 is a wasteful number, since it uses less digits than its factorization.

11212111031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280302775794 (or 280302775790 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11212111031320 its reverse (2313011121211), we get a palindrome (13525122152531).

The spelling of 11212111031320 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, thirty-one thousand, three hundred twenty".