221122322031 has 32 divisors (see below), whose sum is σ = 334259645440. Its totient is φ = 128898117504.

The previous prime is 221122322017. The next prime is 221122322051. The reversal of 221122322031 is 130223221122.

It is not a de Polignac number, because 221122322031 - 2⁶ = 221122321967 is a prime.

It is a super-2 number, since 2×221122322031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221122321989 and 221122322007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122322011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10220181 + ... + 10241793.

It is an arithmetic number, because the mean of its divisors is an integer number (10445613920).

Almost surely, 2^221122322031 is an apocalyptic number.

221122322031 is a deficient number, since it is larger than the sum of its proper divisors (113137323409).

221122322031 is a wasteful number, since it uses less digits than its factorization.

221122322031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35455.

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

Adding to 221122322031 its reverse (130223221122), we get a palindrome (351345543153).

The spelling of 221122322031 in words is "two hundred twenty-one billion, one hundred twenty-two million, three hundred twenty-two thousand, thirty-one".