111021220212102 has 24 divisors (see below), whose sum is σ = 247047219752736. Its totient is φ = 36006882230736.

The previous prime is 111021220212083. The next prime is 111021220212127. The reversal of 111021220212102 is 201212022120111.

111021220212102 is a `hidden beast` number, since 1 + 110 + 21 + 220 + 212 + 102 = 666.

It is a super-2 number, since 2×111021220212102² (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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83349263758 + ... + 83349265089.

It is an arithmetic number, because the mean of its divisors is an integer number (10293634156364).

Almost surely, 2^{111021220212102} is an apocalyptic number.

111021220212102 is an abundant number, since it is smaller than the sum of its proper divisors (136025999540634).

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

111021220212102 is a wasteful number, since it uses less digits than its factorization.

111021220212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166698528892 (or 166698528889 counting only the distinct ones).

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

Adding to 111021220212102 its reverse (201212022120111), we get a palindrome (312233242332213).

The spelling of 111021220212102 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty million, two hundred twelve thousand, one hundred two".