210211222200121 has 16 divisors (see below), whose sum is σ = 219905888394240. Its totient is φ = 200562846668800.

The previous prime is 210211222200061. The next prime is 210211222200143. The reversal of 210211222200121 is 121002222112012.

It is a cyclic number.

It is not a de Polignac number, because 210211222200121 - 2²⁷ = 210211087982393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210211202200121) 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, 260783721 + ... + 261588553.

It is an arithmetic number, because the mean of its divisors is an integer number (13744118024640).

Almost surely, 2^{210211222200121} is an apocalyptic number.

It is an amenable number.

210211222200121 is a deficient number, since it is larger than the sum of its proper divisors (9694666194119).

210211222200121 is a wasteful number, since it uses less digits than its factorization.

210211222200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833576.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210211222200121 its reverse (121002222112012), we get a palindrome (331213444312133).

The spelling of 210211222200121 in words is "two hundred ten trillion, two hundred eleven billion, two hundred twenty-two million, two hundred thousand, one hundred twenty-one".