2311202211321 has 4 divisors (see below), whose sum is σ = 3081602948432. Its totient is φ = 1540801474212.

The previous prime is 2311202211191. The next prime is 2311202211323. The reversal of 2311202211321 is 1231122021132.

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 2311202211321 - 2¹¹ = 2311202209273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311202211323) 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, 385200368551 + ... + 385200368556.

It is an arithmetic number, because the mean of its divisors is an integer number (770400737108).

Almost surely, 2^{2311202211321} is an apocalyptic number.

It is an amenable number.

2311202211321 is a deficient number, since it is larger than the sum of its proper divisors (770400737111).

2311202211321 is an equidigital number, since it uses as much as digits as its factorization.

2311202211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770400737110.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2311202211321 its reverse (1231122021132), we get a palindrome (3542324232453).

The spelling of 2311202211321 in words is "two trillion, three hundred eleven billion, two hundred two million, two hundred eleven thousand, three hundred twenty-one".