213122220923 has 2 divisors, whose sum is σ = 213122220924. Its totient is φ = 213122220922.

The previous prime is 213122220907. The next prime is 213122220953. The reversal of 213122220923 is 329022221312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213122220923 - 2⁴ = 213122220907 is a prime.

It is not a weakly prime, because it can be changed into another prime (213122220953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561110461 + 106561110462.

It is an arithmetic number, because the mean of its divisors is an integer number (106561110462).

Almost surely, 2^213122220923 is an apocalyptic number.

213122220923 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122220923 is an equidigital number, since it uses as much as digits as its factorization.

213122220923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 213122220923 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred twenty thousand, nine hundred twenty-three".