111201221220122 has 128 divisors (see below), whose sum is σ = 198921222696960. Its totient is φ = 46055158912000.

The previous prime is 111201221220119. The next prime is 111201221220127. The reversal of 111201221220122 is 221022122102111.

It is a super-2 number, since 2×111201221220122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111201221220094 and 111201221220103.

It is not an unprimeable number, because it can be changed into a prime (111201221220127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1389610472 + ... + 1389690492.

It is an arithmetic number, because the mean of its divisors is an integer number (1554072052320).

Almost surely, 2^{111201221220122} is an apocalyptic number.

111201221220122 is a deficient number, since it is larger than the sum of its proper divisors (87720001476838).

111201221220122 is a wasteful number, since it uses less digits than its factorization.

111201221220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81068.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111201221220122 its reverse (221022122102111), we get a palindrome (332223343322233).

The spelling of 111201221220122 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".