211202202100121 has 2 divisors, whose sum is σ = 211202202100122. Its totient is φ = 211202202100120.

The previous prime is 211202202100111. The next prime is 211202202100171. The reversal of 211202202100121 is 121001202202112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198727213420096 + 12474988680025 = 14097064^2 + 3531995^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202202100121 - 2¹⁴ = 211202202083737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211202202100121.

It is not a weakly prime, because it can be changed into another prime (211202202100111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601101050060 + 105601101050061.

It is an arithmetic number, because the mean of its divisors is an integer number (105601101050061).

Almost surely, 2^{211202202100121} is an apocalyptic number.

It is an amenable number.

211202202100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202202100121 is an equidigital number, since it uses as much as digits as its factorization.

211202202100121 is an evil number, because the sum of its binary digits is even.

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

Adding to 211202202100121 its reverse (121001202202112), we get a palindrome (332203404302233).

The spelling of 211202202100121 in words is "two hundred eleven trillion, two hundred two billion, two hundred two million, one hundred thousand, one hundred twenty-one".