21110120222202 has 32 divisors (see below), whose sum is σ = 51176049024960. Its totient is φ = 6397006127760.

The previous prime is 21110120222179. The next prime is 21110120222203. The reversal of 21110120222202 is 20222202101112.

It is a happy number.

21110120222202 is a `hidden beast` number, since 211 + 10 + 1 + 20 + 222 + 202 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (21110120222203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17769460873 + ... + 17769462060.

It is an arithmetic number, because the mean of its divisors is an integer number (1599251532030).

Almost surely, 2^{21110120222202} is an apocalyptic number.

21110120222202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110120222202 is an abundant number, since it is smaller than the sum of its proper divisors (30065928802758).

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

21110120222202 is a wasteful number, since it uses less digits than its factorization.

21110120222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35538922955 (or 35538922949 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21110120222202 its reverse (20222202101112), we get a palindrome (41332322323314).

The spelling of 21110120222202 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty million, two hundred twenty-two thousand, two hundred two".