21370885069231 has 2 divisors, whose sum is σ = 21370885069232. Its totient is φ = 21370885069230.

The previous prime is 21370885069211. The next prime is 21370885069297. The reversal of 21370885069231 is 13296058807312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21370885069231 - 2¹¹ = 21370885067183 is a prime.

It is a super-2 number, since 2×21370885069231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21370885069211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10685442534615 + 10685442534616.

It is an arithmetic number, because the mean of its divisors is an integer number (10685442534616).

Almost surely, 2^{21370885069231} is an apocalyptic number.

21370885069231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21370885069231 is an equidigital number, since it uses as much as digits as its factorization.

21370885069231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 21370885069231 in words is "twenty-one trillion, three hundred seventy billion, eight hundred eighty-five million, sixty-nine thousand, two hundred thirty-one".