22001331131 has 4 divisors (see below), whose sum is σ = 23693741232. Its totient is φ = 20308921032.

The previous prime is 22001331097. The next prime is 22001331137. The reversal of 22001331131 is 13113310022.

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 22001331131 - 2¹⁰ = 22001330107 is a prime.

It is a super-2 number, since 2×22001331131² (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 (22001331137) 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, 846205031 + ... + 846205056.

It is an arithmetic number, because the mean of its divisors is an integer number (5923435308).

Almost surely, 2^22001331131 is an apocalyptic number.

22001331131 is a deficient number, since it is larger than the sum of its proper divisors (1692410101).

22001331131 is a wasteful number, since it uses less digits than its factorization.

22001331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692410100.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 22001331131 its reverse (13113310022), we get a palindrome (35114641153).

It can be divided in two parts, 2200 and 1331131, that added together give a palindrome (1333331).

The spelling of 22001331131 in words is "twenty-two billion, one million, three hundred thirty-one thousand, one hundred thirty-one".