221311113122 has 32 divisors (see below), whose sum is σ = 363097785024. Its totient is φ = 100331784000.

The previous prime is 221311113109. The next prime is 221311113151.

221311113122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221311113094 and 221311113103.

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, 13516913 + ... + 13533275.

It is an arithmetic number, because the mean of its divisors is an integer number (11346805782).

Almost surely, 2^221311113122 is an apocalyptic number.

221311113122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221311113122 is a deficient number, since it is larger than the sum of its proper divisors (141786671902).

221311113122 is a wasteful number, since it uses less digits than its factorization.

221311113122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17954.

The product of its digits is 144, while the sum is 20.

It can be divided in two parts, 221311 and 113122, that added together give a palindrome (334433).

The spelling of 221311113122 in words is "two hundred twenty-one billion, three hundred eleven million, one hundred thirteen thousand, one hundred twenty-two".