22210000121 has 8 divisors (see below), whose sum is σ = 22720807560. Its totient is φ = 21704775552.

The previous prime is 22210000097. The next prime is 22210000187. The reversal of 22210000121 is 12100001222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1021122025 + 21188878096 = 31955^2 + 145564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22210000121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22210000721) 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, 1387670 + ... + 1403583.

It is an arithmetic number, because the mean of its divisors is an integer number (2840100945).

Almost surely, 2^22210000121 is an apocalyptic number.

It is an amenable number.

22210000121 is a deficient number, since it is larger than the sum of its proper divisors (510807439).

22210000121 is a wasteful number, since it uses less digits than its factorization.

22210000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791435.

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

Adding to 22210000121 its reverse (12100001222), we get a palindrome (34310001343).

The spelling of 22210000121 in words is "twenty-two billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.