21421141131 has 64 divisors (see below), whose sum is σ = 32429376000. Its totient is φ = 12485975040.

The previous prime is 21421141127. The next prime is 21421141141. The reversal of 21421141131 is 13114112412.

It is not a de Polignac number, because 21421141131 - 2² = 21421141127 is a prime.

It is a super-2 number, since 2×21421141131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21421141098 and 21421141107.

It is not an unprimeable number, because it can be changed into a prime (21421141111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13990836 + ... + 13992366.

It is an arithmetic number, because the mean of its divisors is an integer number (506709000).

Almost surely, 2^21421141131 is an apocalyptic number.

21421141131 is a deficient number, since it is larger than the sum of its proper divisors (11008234869).

21421141131 is a wasteful number, since it uses less digits than its factorization.

21421141131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its digits is 192, while the sum is 21.

Adding to 21421141131 its reverse (13114112412), we get a palindrome (34535253543).

The spelling of 21421141131 in words is "twenty-one billion, four hundred twenty-one million, one hundred forty-one thousand, one hundred thirty-one".