21000132223131 has 32 divisors (see below), whose sum is σ = 29109565440000. Its totient is φ = 13451912115840.

The previous prime is 21000132223129. The next prime is 21000132223141. The reversal of 21000132223131 is 13132223100012.

It is not a de Polignac number, because 21000132223131 - 2¹ = 21000132223129 is a prime.

It is a super-2 number, since 2×21000132223131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000132223098 and 21000132223107.

It is not an unprimeable number, because it can be changed into a prime (21000132223121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32927085 + ... + 33558801.

It is an arithmetic number, because the mean of its divisors is an integer number (909673920000).

Almost surely, 2^{21000132223131} is an apocalyptic number.

21000132223131 is a deficient number, since it is larger than the sum of its proper divisors (8109433216869).

21000132223131 is a wasteful number, since it uses less digits than its factorization.

21000132223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634299.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21000132223131 its reverse (13132223100012), we get a palindrome (34132355323143).

The spelling of 21000132223131 in words is "twenty-one trillion, one hundred thirty-two million, two hundred twenty-three thousand, one hundred thirty-one".