222010000121 has 12 divisors (see below), whose sum is σ = 278122418532. Its totient is φ = 175656263328.

The previous prime is 222010000111. The next prime is 222010000151. The reversal of 222010000121 is 121000010222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17828925625 + 204181074496 = 133525^2 + 451864^2 .

It is not a de Polignac number, because 222010000121 - 2³⁰ = 220936258297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222010000111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174261530 + ... + 174262803.

It is an arithmetic number, because the mean of its divisors is an integer number (23176868211).

Almost surely, 2^222010000121 is an apocalyptic number.

It is an amenable number.

222010000121 is a deficient number, since it is larger than the sum of its proper divisors (56112418411).

222010000121 is a wasteful number, since it uses less digits than its factorization.

222010000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348524360 (or 348524353 counting only the distinct ones).

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

Adding to 222010000121 its reverse (121000010222), we get a palindrome (343010010343).

It can be divided in two parts, 222010000 and 121, that multiplied together give a square (26863210000 = 163900²).

The spelling of 222010000121 in words is "two hundred twenty-two billion, ten million, one hundred twenty-one", and thus it is an aban number.