22002100000121 has 8 divisors (see below), whose sum is σ = 22084047376200. Its totient is φ = 21920153774080.

The previous prime is 22002100000093. The next prime is 22002100000241. The reversal of 22002100000121 is 12100000120022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5109498576400 + 16892601423721 = 2260420^2 + 4110061^2 .

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 22002100000121 - 2¹⁴ = 22002099983737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22002100009121) 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, 69574841 + ... + 69890361.

It is an arithmetic number, because the mean of its divisors is an integer number (2760505922025).

Almost surely, 2^{22002100000121} is an apocalyptic number.

It is an amenable number.

22002100000121 is a deficient number, since it is larger than the sum of its proper divisors (81947376079).

22002100000121 is a wasteful number, since it uses less digits than its factorization.

22002100000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575019.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22002100000121 its reverse (12100000120022), we get a palindrome (34102100120143).

The spelling of 22002100000121 in words is "twenty-two trillion, two billion, one hundred million, one hundred twenty-one", and thus it is an aban number.