20212011269 has 2 divisors, whose sum is σ = 20212011270. Its totient is φ = 20212011268.

The previous prime is 20212011233. The next prime is 20212011283. The reversal of 20212011269 is 96211021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20118018244 + 93993025 = 141838^2 + 9695^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212011269 - 2³² = 15917043973 is a prime.

It is a super-2 number, since 2×20212011269² (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 (20212011299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106005634 + 10106005635.

It is an arithmetic number, because the mean of its divisors is an integer number (10106005635).

Almost surely, 2^20212011269 is an apocalyptic number.

It is an amenable number.

20212011269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212011269 is an equidigital number, since it uses as much as digits as its factorization.

20212011269 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 26.

The spelling of 20212011269 in words is "twenty billion, two hundred twelve million, eleven thousand, two hundred sixty-nine".