2311102111020 has 48 divisors (see below), whose sum is σ = 6508491060960. Its totient is φ = 612731501056.

The previous prime is 2311102110991. The next prime is 2311102111037. The reversal of 2311102111020 is 201112011132.

It is a super-2 number, since 2×2311102111020² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111314385 + ... + 111335144.

It is an arithmetic number, because the mean of its divisors is an integer number (135593563770).

Almost surely, 2^{2311102111020} is an apocalyptic number.

2311102111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311102111020 is an abundant number, since it is smaller than the sum of its proper divisors (4197388949940).

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

2311102111020 is a wasteful number, since it uses less digits than its factorization.

2311102111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222649714 (or 222649712 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2311102111020 its reverse (201112011132), we get a palindrome (2512214122152).

The spelling of 2311102111020 in words is "two trillion, three hundred eleven billion, one hundred two million, one hundred eleven thousand, twenty".