2221321110123 has 32 divisors (see below), whose sum is σ = 3174803444736. Its totient is φ = 1377888893568.

The previous prime is 2221321110109. The next prime is 2221321110133. The reversal of 2221321110123 is 3210111231222.

It is not a de Polignac number, because 2221321110123 - 2⁶ = 2221321110059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221321110123.

It is not an unprimeable number, because it can be changed into a prime (2221321110133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11064786 + ... + 11263752.

It is an arithmetic number, because the mean of its divisors is an integer number (99212607648).

Almost surely, 2^{2221321110123} is an apocalyptic number.

2221321110123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2221321110123 is a deficient number, since it is larger than the sum of its proper divisors (953482334613).

2221321110123 is a wasteful number, since it uses less digits than its factorization.

2221321110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203403.

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

Adding to 2221321110123 its reverse (3210111231222), we get a palindrome (5431432341345).

The spelling of 2221321110123 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".