21112023151 has 2 divisors, whose sum is σ = 21112023152. Its totient is φ = 21112023150.

The previous prime is 21112023073. The next prime is 21112023193. The reversal of 21112023151 is 15132021112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112023151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112003151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556011575 + 10556011576.

It is an arithmetic number, because the mean of its divisors is an integer number (10556011576).

Almost surely, 2^21112023151 is an apocalyptic number.

21112023151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112023151 is an equidigital number, since it uses as much as digits as its factorization.

21112023151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 21112023151 its reverse (15132021112), we get a palindrome (36244044263).

The spelling of 21112023151 in words is "twenty-one billion, one hundred twelve million, twenty-three thousand, one hundred fifty-one".