120021313311311 has 32 divisors (see below), whose sum is σ = 127807721303040. Its totient is φ = 112472143660800.

The previous prime is 120021313311299. The next prime is 120021313311313. The reversal of 120021313311311 is 113113313120021.

It is a cyclic number.

It is not a de Polignac number, because 120021313311311 - 2³⁸ = 119746435404367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021313311313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179990126 + ... + 180655716.

It is an arithmetic number, because the mean of its divisors is an integer number (3993991290720).

Almost surely, 2^{120021313311311} is an apocalyptic number.

120021313311311 is a deficient number, since it is larger than the sum of its proper divisors (7786407991729).

120021313311311 is a wasteful number, since it uses less digits than its factorization.

120021313311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666407.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 120021313311311 its reverse (113113313120021), we get a palindrome (233134626431332).

The spelling of 120021313311311 in words is "one hundred twenty trillion, twenty-one billion, three hundred thirteen million, three hundred eleven thousand, three hundred eleven".