20013222131 has 8 divisors (see below), whose sum is σ = 22874471520. Its totient is φ = 17152527168.

The previous prime is 20013222121. The next prime is 20013222133. The reversal of 20013222131 is 13122231002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20013222131 - 2²² = 20009027827 is a prime.

It is a super-2 number, since 2×20013222131² (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 (20013222133) 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, 58136 + ... + 208341.

It is an arithmetic number, because the mean of its divisors is an integer number (2859308940).

Almost surely, 2^20013222131 is an apocalyptic number.

20013222131 is a deficient number, since it is larger than the sum of its proper divisors (2861249389).

20013222131 is a wasteful number, since it uses less digits than its factorization.

20013222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277213.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20013222131 its reverse (13122231002), we get a palindrome (33135453133).

The spelling of 20013222131 in words is "twenty billion, thirteen million, two hundred twenty-two thousand, one hundred thirty-one".