22221001120121 has 16 divisors (see below), whose sum is σ = 22608964270080. Its totient is φ = 21836516592000.

The previous prime is 22221001120061. The next prime is 22221001120141. The reversal of 22221001120121 is 12102110012222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221001120121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221001120121.

It is not an unprimeable number, because it can be changed into a prime (22221001120141) 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, 8494871 + ... + 10798371.

It is an arithmetic number, because the mean of its divisors is an integer number (1413060266880).

Almost surely, 2^{22221001120121} is an apocalyptic number.

It is an amenable number.

22221001120121 is a deficient number, since it is larger than the sum of its proper divisors (387963149959).

22221001120121 is a wasteful number, since it uses less digits than its factorization.

22221001120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304256.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221001120121 its reverse (12102110012222), we get a palindrome (34323111132343).

The spelling of 22221001120121 in words is "twenty-two trillion, two hundred twenty-one billion, one million, one hundred twenty thousand, one hundred twenty-one".