2021312032123 has 8 divisors (see below), whose sum is σ = 2069962171200. Its totient is φ = 1972736569608.

The previous prime is 2021312032111. The next prime is 2021312032127. The reversal of 2021312032123 is 3212302131202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021312032123 - 2¹⁷ = 2021311901051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021312032094 and 2021312032103.

It is not an unprimeable number, because it can be changed into a prime (2021312032127) 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, 18614353 + ... + 18722626.

It is an arithmetic number, because the mean of its divisors is an integer number (258745271400).

Almost surely, 2^{2021312032123} is an apocalyptic number.

2021312032123 is a deficient number, since it is larger than the sum of its proper divisors (48650139077).

2021312032123 is a wasteful number, since it uses less digits than its factorization.

2021312032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37338281.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2021312032123 its reverse (3212302131202), we get a palindrome (5233614163325).

The spelling of 2021312032123 in words is "two trillion, twenty-one billion, three hundred twelve million, thirty-two thousand, one hundred twenty-three".