21570373301 has 2 divisors, whose sum is σ = 21570373302. Its totient is φ = 21570373300.

The previous prime is 21570373277. The next prime is 21570373367. The reversal of 21570373301 is 10337307512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20936643025 + 633730276 = 144695^2 + 25174^2 .

It is a cyclic number.

It is not a de Polignac number, because 21570373301 - 2²⁶ = 21503264437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21570378301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10785186650 + 10785186651.

It is an arithmetic number, because the mean of its divisors is an integer number (10785186651).

Almost surely, 2^21570373301 is an apocalyptic number.

It is an amenable number.

21570373301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21570373301 is an equidigital number, since it uses as much as digits as its factorization.

21570373301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 32.

The spelling of 21570373301 in words is "twenty-one billion, five hundred seventy million, three hundred seventy-three thousand, three hundred one".