1256320222 has 8 divisors (see below), whose sum is σ = 1884800016. Its totient is φ = 628053552.

The previous prime is 1256320211. The next prime is 1256320243. The reversal of 1256320222 is 2220236521.

It is a happy number.

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

It is a super-2 number, since 2×1256320222² = 3156681000412258568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37623 + ... + 62674.

It is an arithmetic number, because the mean of its divisors is an integer number (235600002).

Almost surely, 2^1256320222 is an apocalyptic number.

1256320222 is a deficient number, since it is larger than the sum of its proper divisors (628479794).

1256320222 is a wasteful number, since it uses less digits than its factorization.

1256320222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106562.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1256320222 is about 35444.6077986483. The cubic root of 1256320222 is about 1079.0298277648.

Adding to 1256320222 its reverse (2220236521), we get a palindrome (3476556743).

The spelling of 1256320222 in words is "one billion, two hundred fifty-six million, three hundred twenty thousand, two hundred twenty-two".