21232002020269 has 2 divisors, whose sum is σ = 21232002020270. Its totient is φ = 21232002020268.

The previous prime is 21232002020209. The next prime is 21232002020347. The reversal of 21232002020269 is 96202020023212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15056960908900 + 6175041111369 = 3880330^2 + 2484963^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232002020269 - 2¹³ = 21232002012077 is a prime.

It is a super-2 number, since 2×21232002020269² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21232002020269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232002020209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616001010134 + 10616001010135.

It is an arithmetic number, because the mean of its divisors is an integer number (10616001010135).

Almost surely, 2^{21232002020269} is an apocalyptic number.

It is an amenable number.

21232002020269 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232002020269 is an equidigital number, since it uses as much as digits as its factorization.

21232002020269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 21232002020269 in words is "twenty-one trillion, two hundred thirty-two billion, two million, twenty thousand, two hundred sixty-nine".