21140105151 has 16 divisors (see below), whose sum is σ = 30829547520. Its totient is φ = 12778725120.

The previous prime is 21140105131. The next prime is 21140105159. The reversal of 21140105151 is 15150104112.

It is not a de Polignac number, because 21140105151 - 2⁶ = 21140105087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140105159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823666 + ... + 848943.

It is an arithmetic number, because the mean of its divisors is an integer number (1926846720).

Almost surely, 2^21140105151 is an apocalyptic number.

21140105151 is a deficient number, since it is larger than the sum of its proper divisors (9689442369).

21140105151 is a wasteful number, since it uses less digits than its factorization.

21140105151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673006.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 21140105151 its reverse (15150104112), we get a palindrome (36290209263).

The spelling of 21140105151 in words is "twenty-one billion, one hundred forty million, one hundred five thousand, one hundred fifty-one".