201210222102121 has 4 divisors (see below), whose sum is σ = 205889529592912. Its totient is φ = 196530914611332.

The previous prime is 201210222102101. The next prime is 201210222102143. The reversal of 201210222102121 is 121201222012102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201210222102121 - 2⁵ = 201210222102089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201210222102101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339653745331 + ... + 2339653745416.

It is an arithmetic number, because the mean of its divisors is an integer number (51472382398228).

Almost surely, 2^{201210222102121} is an apocalyptic number.

It is an amenable number.

201210222102121 is a deficient number, since it is larger than the sum of its proper divisors (4679307490791).

201210222102121 is an equidigital number, since it uses as much as digits as its factorization.

201210222102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679307490790.

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

Adding to 201210222102121 its reverse (121201222012102), we get a palindrome (322411444114223).

The spelling of 201210222102121 in words is "two hundred one trillion, two hundred ten billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".