201222101121 has 24 divisors (see below), whose sum is σ = 275014434240. Its totient is φ = 130869146016.

The previous prime is 201222101033. The next prime is 201222101123. The reversal of 201222101121 is 121101222102.

It is not a de Polignac number, because 201222101121 - 2¹⁷ = 201221970049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201222101121.

It is not an unprimeable number, because it can be changed into a prime (201222101123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4632315 + ... + 4675551.

It is an arithmetic number, because the mean of its divisors is an integer number (11458934760).

Almost surely, 2^201222101121 is an apocalyptic number.

It is an amenable number.

201222101121 is a deficient number, since it is larger than the sum of its proper divisors (73792333119).

201222101121 is an equidigital number, since it uses as much as digits as its factorization.

201222101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44165 (or 44122 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201222101121 its reverse (121101222102), we get a palindrome (322323323223).

The spelling of 201222101121 in words is "two hundred one billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty-one".