2121192320231 has 2 divisors, whose sum is σ = 2121192320232. Its totient is φ = 2121192320230.

The previous prime is 2121192320209. The next prime is 2121192320267. The reversal of 2121192320231 is 1320232911212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121192320231 - 2³⁰ = 2120118578407 is a prime.

It is a super-2 number, since 2×2121192320231² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121192320194 and 2121192320203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121192320831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060596160115 + 1060596160116.

It is an arithmetic number, because the mean of its divisors is an integer number (1060596160116).

Almost surely, 2^{2121192320231} is an apocalyptic number.

2121192320231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121192320231 is an equidigital number, since it uses as much as digits as its factorization.

2121192320231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 2121192320231 in words is "two trillion, one hundred twenty-one billion, one hundred ninety-two million, three hundred twenty thousand, two hundred thirty-one".