212020506923 has 2 divisors, whose sum is σ = 212020506924. Its totient is φ = 212020506922.

The previous prime is 212020506913. The next prime is 212020506947. The reversal of 212020506923 is 329605020212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020506923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212020506923.

It is not a weakly prime, because it can be changed into another prime (212020506913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010253461 + 106010253462.

It is an arithmetic number, because the mean of its divisors is an integer number (106010253462).

Almost surely, 2^212020506923 is an apocalyptic number.

212020506923 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020506923 is an equidigital number, since it uses as much as digits as its factorization.

212020506923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 212020506923 in words is "two hundred twelve billion, twenty million, five hundred six thousand, nine hundred twenty-three".