202201212100121 has 16 divisors (see below), whose sum is σ = 218024146529280. Its totient is φ = 186416748967680.

The previous prime is 202201212100091. The next prime is 202201212100189. The reversal of 202201212100121 is 121001212102202.

It is a cyclic number.

It is not a de Polignac number, because 202201212100121 - 2¹⁰ = 202201212099097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202201212100121.

It is not an unprimeable number, because it can be changed into a prime (202201212100621) 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, 111491345 + ... + 113290433.

It is an arithmetic number, because the mean of its divisors is an integer number (13626509158080).

Almost surely, 2^{202201212100121} is an apocalyptic number.

It is an amenable number.

202201212100121 is a deficient number, since it is larger than the sum of its proper divisors (15822934429159).

202201212100121 is a wasteful number, since it uses less digits than its factorization.

202201212100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809776.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202201212100121 its reverse (121001212102202), we get a palindrome (323202424202323).

The spelling of 202201212100121 in words is "two hundred two trillion, two hundred one billion, two hundred twelve million, one hundred thousand, one hundred twenty-one".