22121554111 has 8 divisors (see below), whose sum is σ = 22248626400. Its totient is φ = 21994535520.

The previous prime is 22121554097. The next prime is 22121554127. The reversal of 22121554111 is 11145512122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22121554111 - 2³¹ = 19974070463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121554171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1053705 + ... + 1074493.

It is an arithmetic number, because the mean of its divisors is an integer number (2781078300).

Almost surely, 2^22121554111 is an apocalyptic number.

22121554111 is a deficient number, since it is larger than the sum of its proper divisors (127072289).

22121554111 is a wasteful number, since it uses less digits than its factorization.

22121554111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26849.

The product of its digits is 800, while the sum is 25.

The spelling of 22121554111 in words is "twenty-two billion, one hundred twenty-one million, five hundred fifty-four thousand, one hundred eleven".