201313322121 has 4 divisors (see below), whose sum is σ = 268417762832. Its totient is φ = 134208881412.

The previous prime is 201313322117. The next prime is 201313322129. The reversal of 201313322121 is 121223313102.

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 not a de Polignac number, because 201313322121 - 2² = 201313322117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201313322129) 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, 33552220351 + ... + 33552220356.

It is an arithmetic number, because the mean of its divisors is an integer number (67104440708).

Almost surely, 2^201313322121 is an apocalyptic number.

It is an amenable number.

201313322121 is a deficient number, since it is larger than the sum of its proper divisors (67104440711).

201313322121 is an equidigital number, since it uses as much as digits as its factorization.

201313322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67104440710.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 201313322121 its reverse (121223313102), we get a palindrome (322536635223).

The spelling of 201313322121 in words is "two hundred one billion, three hundred thirteen million, three hundred twenty-two thousand, one hundred twenty-one".