21032311151 has 2 divisors, whose sum is σ = 21032311152. Its totient is φ = 21032311150.

The previous prime is 21032311109. The next prime is 21032311229. The reversal of 21032311151 is 15111323012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032311151 is a prime.

It is a super-2 number, since 2×21032311151² (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 (21032311351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516155575 + 10516155576.

It is an arithmetic number, because the mean of its divisors is an integer number (10516155576).

Almost surely, 2^21032311151 is an apocalyptic number.

21032311151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032311151 is an equidigital number, since it uses as much as digits as its factorization.

21032311151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 21032311151 its reverse (15111323012), we get a palindrome (36143634163).

The spelling of 21032311151 in words is "twenty-one billion, thirty-two million, three hundred eleven thousand, one hundred fifty-one".