21153002200531 has 2 divisors, whose sum is σ = 21153002200532. Its totient is φ = 21153002200530.

The previous prime is 21153002200487. The next prime is 21153002200559. The reversal of 21153002200531 is 13500220035112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21153002200531 is a prime.

It is a super-2 number, since 2×21153002200531² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21153002200496 and 21153002200505.

It is not a weakly prime, because it can be changed into another prime (21153002200931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10576501100265 + 10576501100266.

It is an arithmetic number, because the mean of its divisors is an integer number (10576501100266).

Almost surely, 2^{21153002200531} is an apocalyptic number.

21153002200531 is a deficient number, since it is larger than the sum of its proper divisors (1).

21153002200531 is an equidigital number, since it uses as much as digits as its factorization.

21153002200531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 21153002200531 its reverse (13500220035112), we get a palindrome (34653222235643).

The spelling of 21153002200531 in words is "twenty-one trillion, one hundred fifty-three billion, two million, two hundred thousand, five hundred thirty-one".