202123020971 has 2 divisors, whose sum is σ = 202123020972. Its totient is φ = 202123020970.

The previous prime is 202123020961. The next prime is 202123021091. The reversal of 202123020971 is 179020321202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202123020971 is a prime.

It is not a weakly prime, because it can be changed into another prime (202123020961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061510485 + 101061510486.

It is an arithmetic number, because the mean of its divisors is an integer number (101061510486).

Almost surely, 2^202123020971 is an apocalyptic number.

202123020971 is a deficient number, since it is larger than the sum of its proper divisors (1).

202123020971 is an equidigital number, since it uses as much as digits as its factorization.

202123020971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 202123020971 in words is "two hundred two billion, one hundred twenty-three million, twenty thousand, nine hundred seventy-one".