21200432152151 has 16 divisors (see below), whose sum is σ = 24275783832384. Its totient is φ = 18136788033024.

The previous prime is 21200432152121. The next prime is 21200432152169. The reversal of 21200432152151 is 15125123400212.

It is a cyclic number.

It is not a de Polignac number, because 21200432152151 - 2¹⁸ = 21200431890007 is a prime.

It is a super-2 number, since 2×21200432152151² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200432152121) 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, 7955201 + ... + 10280373.

It is an arithmetic number, because the mean of its divisors is an integer number (1517236489524).

Almost surely, 2^{21200432152151} is an apocalyptic number.

21200432152151 is a deficient number, since it is larger than the sum of its proper divisors (3075351680233).

21200432152151 is a wasteful number, since it uses less digits than its factorization.

21200432152151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327690.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 21200432152151 its reverse (15125123400212), we get a palindrome (36325555552363).

The spelling of 21200432152151 in words is "twenty-one trillion, two hundred billion, four hundred thirty-two million, one hundred fifty-two thousand, one hundred fifty-one".