22221102222102 has 32 divisors (see below), whose sum is σ = 50879117002752. Its totient is φ = 6337883073024.

The previous prime is 22221102222071. The next prime is 22221102222103. The reversal of 22221102222102 is 20122220112222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221102222103) 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, 458445318 + ... + 458493785.

It is an arithmetic number, because the mean of its divisors is an integer number (1589972406336).

Almost surely, 2^{22221102222102} is an apocalyptic number.

22221102222102 is an abundant number, since it is smaller than the sum of its proper divisors (28658014780650).

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

22221102222102 is a wasteful number, since it uses less digits than its factorization.

22221102222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916939692.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221102222102 its reverse (20122220112222), we get a palindrome (42343322334324).

The spelling of 22221102222102 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred two million, two hundred twenty-two thousand, one hundred two".