21141101131 has 4 divisors (see below), whose sum is σ = 21141534600. Its totient is φ = 21140667664.

The previous prime is 21141101119. The next prime is 21141101147. The reversal of 21141101131 is 13110114112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21141101131 - 2²⁵ = 21107546699 is a prime.

It is a super-2 number, since 2×21141101131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21141101171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132721 + ... + 244738.

It is an arithmetic number, because the mean of its divisors is an integer number (5285383650).

Almost surely, 2^21141101131 is an apocalyptic number.

21141101131 is a deficient number, since it is larger than the sum of its proper divisors (433469).

21141101131 is an equidigital number, since it uses as much as digits as its factorization.

21141101131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433468.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21141101131 its reverse (13110114112), we get a palindrome (34251215243).

The spelling of 21141101131 in words is "twenty-one billion, one hundred forty-one million, one hundred one thousand, one hundred thirty-one".