221313203122 has 32 divisors (see below), whose sum is σ = 371533055040. Its totient is φ = 98023403520.

The previous prime is 221313203093. The next prime is 221313203143. The reversal of 221313203122 is 221302313122.

221313203122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221313203122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 221313203093 and 221313203102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696847 + ... + 963442.

It is an arithmetic number, because the mean of its divisors is an integer number (11610407970).

Almost surely, 2^221313203122 is an apocalyptic number.

221313203122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221313203122 is a deficient number, since it is larger than the sum of its proper divisors (150219851918).

221313203122 is a wasteful number, since it uses less digits than its factorization.

221313203122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660458.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221313203122 its reverse (221302313122), we get a palindrome (442615516244).

Subtracting from 221313203122 its reverse (221302313122), we obtain a square (10890000 = 3300²).

The spelling of 221313203122 in words is "two hundred twenty-one billion, three hundred thirteen million, two hundred three thousand, one hundred twenty-two".