2221189772 has 24 divisors (see below), whose sum is σ = 3999582384. Its totient is φ = 1078564032.

The previous prime is 2221189771. The next prime is 2221189777. The reversal of 2221189772 is 2779811222.

It is not an unprimeable number, because it can be changed into a prime (2221189771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67238 + ... + 94674.

It is an arithmetic number, because the mean of its divisors is an integer number (166649266).

Almost surely, 2^2221189772 is an apocalyptic number.

It is an amenable number.

2221189772 is a deficient number, since it is larger than the sum of its proper divisors (1778392612).

2221189772 is a wasteful number, since it uses less digits than its factorization.

2221189772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28025 (or 28023 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 2221189772 is about 47129.5000185659. The cubic root of 2221189772 is about 1304.7537537852.

The spelling of 2221189772 in words is "two billion, two hundred twenty-one million, one hundred eighty-nine thousand, seven hundred seventy-two".