2311201201121 has 4 divisors (see below), whose sum is σ = 2311217203200. Its totient is φ = 2311185199044.

The previous prime is 2311201201117. The next prime is 2311201201187. The reversal of 2311201201121 is 1211021021132.

It is a happy number.

2311201201121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2311201201121 - 2² = 2311201201117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2311201201121.

It is not an unprimeable number, because it can be changed into a prime (2311201201021) 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, 7782401 + ... + 8073918.

It is an arithmetic number, because the mean of its divisors is an integer number (577804300800).

Almost surely, 2^{2311201201121} is an apocalyptic number.

It is an amenable number.

2311201201121 is a deficient number, since it is larger than the sum of its proper divisors (16002079).

2311201201121 is a wasteful number, since it uses less digits than its factorization.

2311201201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16002078.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2311201201121 its reverse (1211021021132), we get a palindrome (3522222222253).

The spelling of 2311201201121 in words is "two trillion, three hundred eleven billion, two hundred one million, two hundred one thousand, one hundred twenty-one".