21441112131 has 16 divisors (see below), whose sum is σ = 28773448704. Its totient is φ = 14201509824.

The previous prime is 21441112109. The next prime is 21441112151. The reversal of 21441112131 is 13121114412.

It is not a de Polignac number, because 21441112131 - 2⁶ = 21441112067 is a prime.

It is a super-2 number, since 2×21441112131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21441112098 and 21441112107.

It is not an unprimeable number, because it can be changed into a prime (21441112151) 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, 1136431 + ... + 1155143.

It is an arithmetic number, because the mean of its divisors is an integer number (1798340544).

Almost surely, 2^21441112131 is an apocalyptic number.

21441112131 is a deficient number, since it is larger than the sum of its proper divisors (7332336573).

21441112131 is a wasteful number, since it uses less digits than its factorization.

21441112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21170.

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

Adding to 21441112131 its reverse (13121114412), we get a palindrome (34562226543).

The spelling of 21441112131 in words is "twenty-one billion, four hundred forty-one million, one hundred twelve thousand, one hundred thirty-one".