21152666441131 has 2 divisors, whose sum is σ = 21152666441132. Its totient is φ = 21152666441130.

The previous prime is 21152666441119. The next prime is 21152666441161. The reversal of 21152666441131 is 13114466625112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21152666441131 - 2³⁵ = 21118306702763 is a prime.

It is a super-2 number, since 2×21152666441131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21152666441161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10576333220565 + 10576333220566.

It is an arithmetic number, because the mean of its divisors is an integer number (10576333220566).

Almost surely, 2^{21152666441131} is an apocalyptic number.

21152666441131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21152666441131 is an equidigital number, since it uses as much as digits as its factorization.

21152666441131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The spelling of 21152666441131 in words is "twenty-one trillion, one hundred fifty-two billion, six hundred sixty-six million, four hundred forty-one thousand, one hundred thirty-one".