22121222202111 has 16 divisors (see below), whose sum is σ = 30778243094016. Its totient is φ = 14105878491936.

The previous prime is 22121222202091. The next prime is 22121222202143. The reversal of 22121222202111 is 11120222212122.

It is not a de Polignac number, because 22121222202111 - 2⁶ = 22121222202047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121222200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2226675 + ... + 7014308.

It is an arithmetic number, because the mean of its divisors is an integer number (1923640193376).

Almost surely, 2^{22121222202111} is an apocalyptic number.

22121222202111 is a deficient number, since it is larger than the sum of its proper divisors (8657020891905).

22121222202111 is a wasteful number, since it uses less digits than its factorization.

22121222202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275702.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22121222202111 its reverse (11120222212122), we get a palindrome (33241444414233).

The spelling of 22121222202111 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, one hundred eleven".