2221021230123 has 32 divisors (see below), whose sum is σ = 3238274160640. Its totient is φ = 1348853575680.

The previous prime is 2221021230041. The next prime is 2221021230137. The reversal of 2221021230123 is 3210321201222.

It is not a de Polignac number, because 2221021230123 - 2¹² = 2221021226027 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 2221021230123.

It is not an unprimeable number, because it can be changed into a prime (2221021230023) 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, 3725590 + ... + 4280427.

It is an arithmetic number, because the mean of its divisors is an integer number (101196067520).

Almost surely, 2^{2221021230123} is an apocalyptic number.

2221021230123 is a deficient number, since it is larger than the sum of its proper divisors (1017252930517).

2221021230123 is a wasteful number, since it uses less digits than its factorization.

2221021230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006227.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2221021230123 its reverse (3210321201222), we get a palindrome (5431342431345).

The spelling of 2221021230123 in words is "two trillion, two hundred twenty-one billion, twenty-one million, two hundred thirty thousand, one hundred twenty-three".