2221223732 has 24 divisors (see below), whose sum is σ = 4784174976. Its totient is φ = 878725728.

The previous prime is 2221223729. The next prime is 2221223759. The reversal of 2221223732 is 2373221222.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050768 + ... + 3051495.

It is an arithmetic number, because the mean of its divisors is an integer number (199340624).

Almost surely, 2^2221223732 is an apocalyptic number.

It is an amenable number.

2221223732 is an abundant number, since it is smaller than the sum of its proper divisors (2562951244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221223732 is a wasteful number, since it uses less digits than its factorization.

2221223732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102287 (or 6102285 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 2221223732 is about 47129.8603010873. The cubic root of 2221223732 is about 1304.7604032563.

Adding to 2221223732 its reverse (2373221222), we get a palindrome (4594444954).

The spelling of 2221223732 in words is "two billion, two hundred twenty-one million, two hundred twenty-three thousand, seven hundred thirty-two".