210201222000121 has 16 divisors (see below), whose sum is σ = 246218980549248. Its totient is φ = 177318195846400.

The previous prime is 210201222000079. The next prime is 210201222000131. The reversal of 210201222000121 is 121000222102012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210201222000121 - 2³⁵ = 210166862261753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201222000095 and 210201222000104.

It is not an unprimeable number, because it can be changed into a prime (210201222000131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7915977610 + ... + 7916004163.

It is an arithmetic number, because the mean of its divisors is an integer number (15388686284328).

Almost surely, 2^{210201222000121} is an apocalyptic number.

It is an amenable number.

210201222000121 is a deficient number, since it is larger than the sum of its proper divisors (36017758549127).

210201222000121 is a wasteful number, since it uses less digits than its factorization.

210201222000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15831981872.

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

Adding to 210201222000121 its reverse (121000222102012), we get a palindrome (331201444102133).

The spelling of 210201222000121 in words is "two hundred ten trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.