21113137483 has 2 divisors, whose sum is σ = 21113137484. Its totient is φ = 21113137482.

The previous prime is 21113137447. The next prime is 21113137489. The reversal of 21113137483 is 38473131112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21113137483 - 2²⁵ = 21079583051 is a prime.

It is not a weakly prime, because it can be changed into another prime (21113137489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556568741 + 10556568742.

It is an arithmetic number, because the mean of its divisors is an integer number (10556568742).

Almost surely, 2^21113137483 is an apocalyptic number.

21113137483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113137483 is an equidigital number, since it uses as much as digits as its factorization.

21113137483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

Adding to 21113137483 its reverse (38473131112), we get a palindrome (59586268595).

The spelling of 21113137483 in words is "twenty-one billion, one hundred thirteen million, one hundred thirty-seven thousand, four hundred eighty-three".