2201311023123 has 4 divisors (see below), whose sum is σ = 2935081364168. Its totient is φ = 1467540682080.

The previous prime is 2201311023103. The next prime is 2201311023139. The reversal of 2201311023123 is 3213201131022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2201311023123 - 2⁶ = 2201311023059 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 2201311023123.

It is not an unprimeable number, because it can be changed into a prime (2201311023103) 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, 366885170518 + ... + 366885170523.

It is an arithmetic number, because the mean of its divisors is an integer number (733770341042).

Almost surely, 2^{2201311023123} is an apocalyptic number.

2201311023123 is a deficient number, since it is larger than the sum of its proper divisors (733770341045).

2201311023123 is an equidigital number, since it uses as much as digits as its factorization.

2201311023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733770341044.

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

Adding to 2201311023123 its reverse (3213201131022), we get a palindrome (5414512154145).

The spelling of 2201311023123 in words is "two trillion, two hundred one billion, three hundred eleven million, twenty-three thousand, one hundred twenty-three".