22001432131 has 8 divisors (see below), whose sum is σ = 25657647200. Its totient is φ = 18858370104.

The previous prime is 22001432083. The next prime is 22001432153. The reversal of 22001432131 is 13123410022.

It is a happy number.

It is not a de Polignac number, because 22001432131 - 2¹⁹ = 22000907843 is a prime.

It is a super-2 number, since 2×22001432131² (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 = 22001432099 and 22001432108.

It is not an unprimeable number, because it can be changed into a prime (22001436131) 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, 32071716 + ... + 32072401.

It is an arithmetic number, because the mean of its divisors is an integer number (3207205900).

Almost surely, 2^22001432131 is an apocalyptic number.

22001432131 is a deficient number, since it is larger than the sum of its proper divisors (3656215069).

22001432131 is an frugal number, since it uses more digits than its factorization.

22001432131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64144138 (or 64144124 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22001432131 its reverse (13123410022), we get a palindrome (35124842153).

The spelling of 22001432131 in words is "twenty-two billion, one million, four hundred thirty-two thousand, one hundred thirty-one".