22221121120021 has 8 divisors (see below), whose sum is σ = 22270764233088. Its totient is φ = 22171533384000.

The previous prime is 22221121119959. The next prime is 22221121120091. The reversal of 22221121120021 is 12002112112222.

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 22221121120021 - 2⁷ = 22221121119893 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 (22221121120091) 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, 13040775 + ... + 14645956.

It is an arithmetic number, because the mean of its divisors is an integer number (2783845529136).

Almost surely, 2^{22221121120021} is an apocalyptic number.

It is an amenable number.

22221121120021 is a deficient number, since it is larger than the sum of its proper divisors (49643113067).

22221121120021 is an equidigital number, since it uses as much as digits as its factorization.

22221121120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27688523.

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

Adding to 22221121120021 its reverse (12002112112222), we get a palindrome (34223233232243).

The spelling of 22221121120021 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty thousand, twenty-one".