220011311131 has 4 divisors (see below), whose sum is σ = 223110062064. Its totient is φ = 216912560200.

The previous prime is 220011311119. The next prime is 220011311153. The reversal of 220011311131 is 131113110022.

It is a happy number.

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 220011311131 - 2²¹ = 220009213979 is a prime.

It is a super-2 number, since 2×220011311131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220011011131) 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, 1549375360 + ... + 1549375501.

It is an arithmetic number, because the mean of its divisors is an integer number (55777515516).

Almost surely, 2^220011311131 is an apocalyptic number.

220011311131 is a deficient number, since it is larger than the sum of its proper divisors (3098750933).

220011311131 is an equidigital number, since it uses as much as digits as its factorization.

220011311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098750932.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 220011311131 its reverse (131113110022), we get a palindrome (351124421153).

The spelling of 220011311131 in words is "two hundred twenty billion, eleven million, three hundred eleven thousand, one hundred thirty-one".