111221112101022 has 128 divisors (see below), whose sum is σ = 308148862464000. Its totient is φ = 28888245237600.

The previous prime is 111221112101017. The next prime is 111221112101023. The reversal of 111221112101022 is 220101211122111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111221112100986 and 111221112101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221112101023) 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, 610681729 + ... + 610863827.

It is an arithmetic number, because the mean of its divisors is an integer number (2407412988000).

Almost surely, 2^{111221112101022} is an apocalyptic number.

111221112101022 is an abundant number, since it is smaller than the sum of its proper divisors (196927750362978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221112101022 is a wasteful number, since it uses less digits than its factorization.

111221112101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329019 (or 329013 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111221112101022 its reverse (220101211122111), we get a palindrome (331322323223133).

The spelling of 111221112101022 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twelve million, one hundred one thousand, twenty-two".