21010022269 has 2 divisors, whose sum is σ = 21010022270. Its totient is φ = 21010022268.

The previous prime is 21010022213. The next prime is 21010022287. The reversal of 21010022269 is 96222001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14320908900 + 6689113369 = 119670^2 + 81787^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010022269 - 2¹⁷ = 21009891197 is a prime.

It is a super-2 number, since 2×21010022269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010022669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505011134 + 10505011135.

It is an arithmetic number, because the mean of its divisors is an integer number (10505011135).

Almost surely, 2^21010022269 is an apocalyptic number.

It is an amenable number.

21010022269 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010022269 is an equidigital number, since it uses as much as digits as its factorization.

21010022269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 21010022269 in words is "twenty-one billion, ten million, twenty-two thousand, two hundred sixty-nine".