201222012201121 has 4 divisors (see below), whose sum is σ = 201224249607600. Its totient is φ = 201219774794644.

The previous prime is 201222012201097. The next prime is 201222012201137. The reversal of 201222012201121 is 121102210222102.

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 201222012201121 - 2²⁹ = 201221475330209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201222012201151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118568331 + ... + 1118748208.

It is an arithmetic number, because the mean of its divisors is an integer number (50306062401900).

Almost surely, 2^{201222012201121} is an apocalyptic number.

It is an amenable number.

201222012201121 is a deficient number, since it is larger than the sum of its proper divisors (2237406479).

201222012201121 is an equidigital number, since it uses as much as digits as its factorization.

201222012201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237406478.

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

Adding to 201222012201121 its reverse (121102210222102), we get a palindrome (322324222423223).

The spelling of 201222012201121 in words is "two hundred one trillion, two hundred twenty-two billion, twelve million, two hundred one thousand, one hundred twenty-one".