2211312031320 has 128 divisors (see below), whose sum is σ = 7584203404800. Its totient is φ = 505271940096.

The previous prime is 2211312031297. The next prime is 2211312031351. The reversal of 2211312031320 is 231302131122.

2211312031320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2050627 + ... + 2937293.

It is an arithmetic number, because the mean of its divisors is an integer number (59251589100).

Almost surely, 2^{2211312031320} is an apocalyptic number.

2211312031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211312031320 is an abundant number, since it is smaller than the sum of its proper divisors (5372891373480).

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

2211312031320 is a wasteful number, since it uses less digits than its factorization.

2211312031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889657 (or 889653 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2211312031320 its reverse (231302131122), we get a palindrome (2442614162442).

The spelling of 2211312031320 in words is "two trillion, two hundred eleven billion, three hundred twelve million, thirty-one thousand, three hundred twenty".