20221002211951 has 2 divisors, whose sum is σ = 20221002211952. Its totient is φ = 20221002211950.

The previous prime is 20221002211939. The next prime is 20221002212003. The reversal of 20221002211951 is 15911220012202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20221002211951 - 2²³ = 20220993823343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221002211351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110501105975 + 10110501105976.

It is an arithmetic number, because the mean of its divisors is an integer number (10110501105976).

Almost surely, 2^{20221002211951} is an apocalyptic number.

20221002211951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221002211951 is an equidigital number, since it uses as much as digits as its factorization.

20221002211951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 20221002211951 in words is "twenty trillion, two hundred twenty-one billion, two million, two hundred eleven thousand, nine hundred fifty-one".