220311222231 has 32 divisors (see below), whose sum is σ = 300703104000. Its totient is φ = 143442351360.

The previous prime is 220311222221. The next prime is 220311222247. The reversal of 220311222231 is 132222113022.

It is not a de Polignac number, because 220311222231 - 2²¹ = 220309125079 is a prime.

It is a super-2 number, since 2×220311222231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220311222198 and 220311222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220311222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9695275 + ... + 9717971.

It is an arithmetic number, because the mean of its divisors is an integer number (9396972000).

Almost surely, 2^220311222231 is an apocalyptic number.

220311222231 is a deficient number, since it is larger than the sum of its proper divisors (80391881769).

220311222231 is a wasteful number, since it uses less digits than its factorization.

220311222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23199.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 220311222231 its reverse (132222113022), we get a palindrome (352533335253).

The spelling of 220311222231 in words is "two hundred twenty billion, three hundred eleven million, two hundred twenty-two thousand, two hundred thirty-one".