21132203131 has 8 divisors (see below), whose sum is σ = 23031948240. Its totient is φ = 19271628192.

The previous prime is 21132203129. The next prime is 21132203153. The reversal of 21132203131 is 13130223112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21132203131 - 2¹ = 21132203129 is a prime.

It is a super-2 number, since 2×21132203131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21132203099 and 21132203108.

It is not an unprimeable number, because it can be changed into a prime (21132203171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9791416 + ... + 9793573.

It is an arithmetic number, because the mean of its divisors is an integer number (2878993530).

Almost surely, 2^21132203131 is an apocalyptic number.

21132203131 is a deficient number, since it is larger than the sum of its proper divisors (1899745109).

21132203131 is a wasteful number, since it uses less digits than its factorization.

21132203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19585085.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21132203131 its reverse (13130223112), we get a palindrome (34262426243).

The spelling of 21132203131 in words is "twenty-one billion, one hundred thirty-two million, two hundred three thousand, one hundred thirty-one".