1172056223 has 4 divisors (see below), whose sum is σ = 1262214408. Its totient is φ = 1081898040.

The previous prime is 1172056189. The next prime is 1172056229. The reversal of 1172056223 is 3226502711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3226502711 = 2801 ⋅1151911.

It is a cyclic number.

It is not a de Polignac number, because 1172056223 - 2¹² = 1172052127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172056229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45079073 + ... + 45079098.

It is an arithmetic number, because the mean of its divisors is an integer number (315553602).

Almost surely, 2^1172056223 is an apocalyptic number.

1172056223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1172056223 is a deficient number, since it is larger than the sum of its proper divisors (90158185).

1172056223 is an equidigital number, since it uses as much as digits as its factorization.

1172056223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90158184.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1172056223 is about 34235.3066730824. The cubic root of 1172056223 is about 1054.3451752786.

Adding to 1172056223 its reverse (3226502711), we get a palindrome (4398558934).

The spelling of 1172056223 in words is "one billion, one hundred seventy-two million, fifty-six thousand, two hundred twenty-three".