22221220101121 has 16 divisors (see below), whose sum is σ = 23673928299840. Its totient is φ = 20796857948160.

The previous prime is 22221220101037. The next prime is 22221220101149. The reversal of 22221220101121 is 12110102212222.

It is a cyclic number.

It is not a de Polignac number, because 22221220101121 - 2¹⁹ = 22221219576833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221220101151) 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, 27804321 + ... + 28592353.

It is an arithmetic number, because the mean of its divisors is an integer number (1479620518740).

Almost surely, 2^{22221220101121} is an apocalyptic number.

It is an amenable number.

22221220101121 is a deficient number, since it is larger than the sum of its proper divisors (1452708198719).

22221220101121 is a wasteful number, since it uses less digits than its factorization.

22221220101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806016.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22221220101121 its reverse (12110102212222), we get a palindrome (34331322313343).

The spelling of 22221220101121 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, one hundred one thousand, one hundred twenty-one".