2123220210311 has 4 divisors (see below), whose sum is σ = 2123698309824. Its totient is φ = 2122742110800.

The previous prime is 2123220210289. The next prime is 2123220210323. The reversal of 2123220210311 is 1130120223212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123220210311 - 2²² = 2123216016007 is a prime.

It is a super-2 number, since 2×2123220210311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123220210361) 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, 239043095 + ... + 239051976.

It is an arithmetic number, because the mean of its divisors is an integer number (530924577456).

Almost surely, 2^{2123220210311} is an apocalyptic number.

2123220210311 is a deficient number, since it is larger than the sum of its proper divisors (478099513).

2123220210311 is an equidigital number, since it uses as much as digits as its factorization.

2123220210311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478099512.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2123220210311 its reverse (1130120223212), we get a palindrome (3253340433523).

The spelling of 2123220210311 in words is "two trillion, one hundred twenty-three billion, two hundred twenty million, two hundred ten thousand, three hundred eleven".