111022220121021 has 24 divisors (see below), whose sum is σ = 174974535684000. Its totient is φ = 67274489685600.

The previous prime is 111022220120993. The next prime is 111022220121031. The reversal of 111022220121021 is 120121022220111.

111022220121021 is a `hidden beast` number, since 1 + 1 + 10 + 222 + 201 + 210 + 21 = 666.

It is not a de Polignac number, because 111022220121021 - 2¹³ = 111022220112829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111022220120985 and 111022220121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022220121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96964035 + ... + 98102336.

It is an arithmetic number, because the mean of its divisors is an integer number (7290605653500).

Almost surely, 2^{111022220121021} is an apocalyptic number.

111022220121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111022220121021 is a deficient number, since it is larger than the sum of its proper divisors (63952315562979).

111022220121021 is a wasteful number, since it uses less digits than its factorization.

111022220121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195072137 (or 195072134 counting only the distinct ones).

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

Adding to 111022220121021 its reverse (120121022220111), we get a palindrome (231143242341132).

The spelling of 111022220121021 in words is "one hundred eleven trillion, twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, twenty-one".