22121121012121 has 8 divisors (see below), whose sum is σ = 22662776642688. Its totient is φ = 21579566148000.

The previous prime is 22121121012097. The next prime is 22121121012157. The reversal of 22121121012121 is 12121012112122.

It is a happy number.

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 22121121012121 - 2⁹ = 22121121011609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121121012421) 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, 24747085 + ... + 25625386.

It is an arithmetic number, because the mean of its divisors is an integer number (2832847080336).

Almost surely, 2^{22121121012121} is an apocalyptic number.

It is an amenable number.

22121121012121 is a deficient number, since it is larger than the sum of its proper divisors (541655630567).

22121121012121 is a wasteful number, since it uses less digits than its factorization.

22121121012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50383223.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22121121012121 its reverse (12121012112122), we get a palindrome (34242133124243).

The spelling of 22121121012121 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-one million, twelve thousand, one hundred twenty-one".