22121220100102 has 4 divisors (see below), whose sum is σ = 33181830150156. Its totient is φ = 11060610050050.

The previous prime is 22121220100081. The next prime is 22121220100181. The reversal of 22121220100102 is 20100102212122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530305025024 + ... + 5530305025027.

It is an arithmetic number, because the mean of its divisors is an integer number (8295457537539).

Almost surely, 2^{22121220100102} is an apocalyptic number.

22121220100102 is a deficient number, since it is larger than the sum of its proper divisors (11060610050054).

22121220100102 is a wasteful number, since it uses less digits than its factorization.

22121220100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060610050053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22121220100102 its reverse (20100102212122), we get a palindrome (42221322312224).

The spelling of 22121220100102 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred thousand, one hundred two".