1222471893 has 8 divisors (see below), whose sum is σ = 1635171328. Its totient is φ = 812376864.

The previous prime is 1222471889. The next prime is 1222471931. The reversal of 1222471893 is 3981742221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222471893 - 2² = 1222471889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222471093) 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, 650005 + ... + 651882.

It is an arithmetic number, because the mean of its divisors is an integer number (204396416).

Almost surely, 2^1222471893 is an apocalyptic number.

It is an amenable number.

1222471893 is a deficient number, since it is larger than the sum of its proper divisors (412699435).

1222471893 is a wasteful number, since it uses less digits than its factorization.

1222471893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302203.

The product of its digits is 48384, while the sum is 39.

The square root of 1222471893 is about 34963.8655328612. The cubic root of 1222471893 is about 1069.2509075502.

The spelling of 1222471893 in words is "one billion, two hundred twenty-two million, four hundred seventy-one thousand, eight hundred ninety-three".