231021102212279 has 2 divisors, whose sum is σ = 231021102212280. Its totient is φ = 231021102212278.

The previous prime is 231021102212273. The next prime is 231021102212287. The reversal of 231021102212279 is 972212201120132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231021102212279 - 2²⁸ = 231020833776823 is a prime.

It is a super-2 number, since 2×231021102212279² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231021102212273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115510551106139 + 115510551106140.

It is an arithmetic number, because the mean of its divisors is an integer number (115510551106140).

Almost surely, 2^{231021102212279} is an apocalyptic number.

231021102212279 is a deficient number, since it is larger than the sum of its proper divisors (1).

231021102212279 is an equidigital number, since it uses as much as digits as its factorization.

231021102212279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 231021102212279 in words is "two hundred thirty-one trillion, twenty-one billion, one hundred two million, two hundred twelve thousand, two hundred seventy-nine".