212021921227 has 2 divisors, whose sum is σ = 212021921228. Its totient is φ = 212021921226.

The previous prime is 212021921201. The next prime is 212021921233. The reversal of 212021921227 is 722129120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021921227 - 2³¹ = 209874437579 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021921927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010960613 + 106010960614.

It is an arithmetic number, because the mean of its divisors is an integer number (106010960614).

Almost surely, 2^212021921227 is an apocalyptic number.

212021921227 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021921227 is an equidigital number, since it uses as much as digits as its factorization.

212021921227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 212021921227 in words is "two hundred twelve billion, twenty-one million, nine hundred twenty-one thousand, two hundred twenty-seven".