221102111021202 has 24 divisors (see below), whose sum is σ = 479127478499280. Its totient is φ = 73689487578360.

The previous prime is 221102111021177. The next prime is 221102111021249. The reversal of 221102111021202 is 202120111201122.

221102111021202 is a `hidden beast` number, since 221 + 1 + 0 + 211 + 10 + 21 + 202 = 666.

It is a super-2 number, since 2×221102111021202² (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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 934553052 + ... + 934789607.

It is an arithmetic number, because the mean of its divisors is an integer number (19963644937470).

Almost surely, 2^{221102111021202} is an apocalyptic number.

221102111021202 is an abundant number, since it is smaller than the sum of its proper divisors (258025367478078).

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

221102111021202 is a wasteful number, since it uses less digits than its factorization.

221102111021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869349238 (or 1869349235 counting only the distinct ones).

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

Adding to 221102111021202 its reverse (202120111201122), we get a palindrome (423222222222324).

The spelling of 221102111021202 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred eleven million, twenty-one thousand, two hundred two".