2221312023 has 24 divisors (see below), whose sum is σ = 3674999328. Its totient is φ = 1266527232.

The previous prime is 2221312013. The next prime is 2221312031. The reversal of 2221312023 is 3202131222.

It is not a de Polignac number, because 2221312023 - 2⁶ = 2221311959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221311987 and 2221312005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221312013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9786 + ... + 67367.

It is an arithmetic number, because the mean of its divisors is an integer number (153124972).

Almost surely, 2^2221312023 is an apocalyptic number.

2221312023 is a deficient number, since it is larger than the sum of its proper divisors (1453687305).

2221312023 is a wasteful number, since it uses less digits than its factorization.

2221312023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77623 (or 77620 counting only the distinct ones).

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

The square root of 2221312023 is about 47130.7969697097. The cubic root of 2221312023 is about 1304.7776905851. Note that the first 3 decimals are identical.

Adding to 2221312023 its reverse (3202131222), we get a palindrome (5423443245).

The spelling of 2221312023 in words is "two billion, two hundred twenty-one million, three hundred twelve thousand, twenty-three".