212021120923 has 2 divisors, whose sum is σ = 212021120924. Its totient is φ = 212021120922.

The previous prime is 212021120879. The next prime is 212021120953. The reversal of 212021120923 is 329021120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021120923 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021120953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010560461 + 106010560462.

It is an arithmetic number, because the mean of its divisors is an integer number (106010560462).

Almost surely, 2^212021120923 is an apocalyptic number.

212021120923 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021120923 is an equidigital number, since it uses as much as digits as its factorization.

212021120923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 212021120923 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, nine hundred twenty-three".