220203111131 has 4 divisors (see below), whose sum is σ = 220204080264. Its totient is φ = 220202142000.

The previous prime is 220203111127. The next prime is 220203111137. The reversal of 220203111131 is 131111302022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220203111131 - 2² = 220203111127 is a prime.

It is a super-2 number, since 2×220203111131² (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 (220203111137) 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, 61031 + ... + 666431.

It is an arithmetic number, because the mean of its divisors is an integer number (55051020066).

Almost surely, 2^220203111131 is an apocalyptic number.

220203111131 is a deficient number, since it is larger than the sum of its proper divisors (969133).

220203111131 is an equidigital number, since it uses as much as digits as its factorization.

220203111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969132.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 220203111131 its reverse (131111302022), we get a palindrome (351314413153).

The spelling of 220203111131 in words is "two hundred twenty billion, two hundred three million, one hundred eleven thousand, one hundred thirty-one".