2021112211973 has 2 divisors, whose sum is σ = 2021112211974. Its totient is φ = 2021112211972.

The previous prime is 2021112211969. The next prime is 2021112211981. The reversal of 2021112211973 is 3791122111202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1658073426244 + 363038785729 = 1287662^2 + 602527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021112211973 - 2² = 2021112211969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021112211913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010556105986 + 1010556105987.

It is an arithmetic number, because the mean of its divisors is an integer number (1010556105987).

Almost surely, 2^{2021112211973} is an apocalyptic number.

It is an amenable number.

2021112211973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021112211973 is an equidigital number, since it uses as much as digits as its factorization.

2021112211973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 2021112211973 in words is "two trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, nine hundred seventy-three".