111021210222102 has 48 divisors (see below), whose sum is σ = 248562824742960. Its totient is φ = 35785977857856.

The previous prime is 111021210222079. The next prime is 111021210222121. The reversal of 111021210222102 is 201222012120111.

111021210222102 is a `hidden beast` number, since 1 + 110 + 21 + 210 + 222 + 102 = 666.

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 23 ways as a sum of consecutive naturals, for example, 511236577 + ... + 511453692.

It is an arithmetic number, because the mean of its divisors is an integer number (5178392182145).

Almost surely, 2^{111021210222102} is an apocalyptic number.

111021210222102 is an abundant number, since it is smaller than the sum of its proper divisors (137541614520858).

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

111021210222102 is a wasteful number, since it uses less digits than its factorization.

111021210222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022690477 (or 1022690474 counting only the distinct ones).

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

Adding to 111021210222102 its reverse (201222012120111), we get a palindrome (312243222342213).

The spelling of 111021210222102 in words is "one hundred eleven trillion, twenty-one billion, two hundred ten million, two hundred twenty-two thousand, one hundred two".