212021022923 has 2 divisors, whose sum is σ = 212021022924. Its totient is φ = 212021022922.

The previous prime is 212021022887. The next prime is 212021022931. The reversal of 212021022923 is 329220120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021022923 - 2¹⁸ = 212020760779 is a prime.

It is a super-2 number, since 2×212021022923² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212021022892 and 212021022901.

It is not a weakly prime, because it can be changed into another prime (212021022973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010511461 + 106010511462.

It is an arithmetic number, because the mean of its divisors is an integer number (106010511462).

Almost surely, 2^212021022923 is an apocalyptic number.

212021022923 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021022923 is an equidigital number, since it uses as much as digits as its factorization.

212021022923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 212021022923 in words is "two hundred twelve billion, twenty-one million, twenty-two thousand, nine hundred twenty-three".