2221230123 has 72 divisors (see below), whose sum is σ = 3822374400. Its totient is φ = 1239035616.

The previous prime is 2221230119. The next prime is 2221230157. The reversal of 2221230123 is 3210321222.

It is not a de Polignac number, because 2221230123 - 2² = 2221230119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221230096 and 2221230105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221230103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3588108 + ... + 3588726.

Almost surely, 2^2221230123 is an apocalyptic number.

2221230123 is a deficient number, since it is larger than the sum of its proper divisors (1601144277).

2221230123 is a wasteful number, since it uses less digits than its factorization.

2221230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2221230123 is about 47129.9281030642. The cubic root of 2221230123 is about 1304.7616546260.

Adding to 2221230123 its reverse (3210321222), we get a palindrome (5431551345).

The spelling of 2221230123 in words is "two billion, two hundred twenty-one million, two hundred thirty thousand, one hundred twenty-three".