111221002121022 has 48 divisors (see below), whose sum is σ = 254239752624000. Its totient is φ = 35042416158672.

The previous prime is 111221002120999. The next prime is 111221002121123. The reversal of 111221002121022 is 220121200122111.

It is a super-2 number, since 2×111221002121022² (a number of 29 digits) contains 22 as substring.

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 = 111221002120986 and 111221002121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 370245772 + ... + 370546047.

It is an arithmetic number, because the mean of its divisors is an integer number (5296661513000).

Almost surely, 2^{111221002121022} is an apocalyptic number.

111221002121022 is an abundant number, since it is smaller than the sum of its proper divisors (143018750502978).

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

111221002121022 is a wasteful number, since it uses less digits than its factorization.

111221002121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740792285 (or 740792282 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111221002121022 its reverse (220121200122111), we get a palindrome (331342202243133).

The spelling of 111221002121022 in words is "one hundred eleven trillion, two hundred twenty-one billion, two million, one hundred twenty-one thousand, twenty-two".