20021970967 has 2 divisors, whose sum is σ = 20021970968. Its totient is φ = 20021970966.

The previous prime is 20021970937. The next prime is 20021970977. The reversal of 20021970967 is 76907912002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20021970967 - 2²³ = 20013582359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021970937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010985483 + 10010985484.

It is an arithmetic number, because the mean of its divisors is an integer number (10010985484).

Almost surely, 2^20021970967 is an apocalyptic number.

20021970967 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021970967 is an equidigital number, since it uses as much as digits as its factorization.

20021970967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 20021970967 in words is "twenty billion, twenty-one million, nine hundred seventy thousand, nine hundred sixty-seven".