210022122000121 has 4 divisors (see below), whose sum is σ = 210023102760100. Its totient is φ = 210021141240144.

The previous prime is 210022122000091. The next prime is 210022122000191. The reversal of 210022122000121 is 121000221220012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135415370249721 + 74606751750400 = 11636811^2 + 8637520^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022122000121 - 2⁷ = 210022121999993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210022122000095 and 210022122000104.

It is not an unprimeable number, because it can be changed into a prime (210022122000191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490058706 + ... + 490487083.

It is an arithmetic number, because the mean of its divisors is an integer number (52505775690025).

Almost surely, 2^{210022122000121} is an apocalyptic number.

It is an amenable number.

210022122000121 is a deficient number, since it is larger than the sum of its proper divisors (980759979).

210022122000121 is an equidigital number, since it uses as much as digits as its factorization.

210022122000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980759978.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210022122000121 its reverse (121000221220012), we get a palindrome (331022343220133).

The spelling of 210022122000121 in words is "two hundred ten trillion, twenty-two billion, one hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.