1222872403 has 4 divisors (see below), whose sum is σ = 1223925048. Its totient is φ = 1221819760.

The previous prime is 1222872401. The next prime is 1222872457. The reversal of 1222872403 is 3042782221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222872403 - 2¹ = 1222872401 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222872401) 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, 524578 + ... + 526903.

It is an arithmetic number, because the mean of its divisors is an integer number (305981262).

Almost surely, 2^1222872403 is an apocalyptic number.

1222872403 is a deficient number, since it is larger than the sum of its proper divisors (1052645).

1222872403 is a wasteful number, since it uses less digits than its factorization.

1222872403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052644.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 1222872403 is about 34969.5925483841. The cubic root of 1222872403 is about 1069.3676652235.

The spelling of 1222872403 in words is "one billion, two hundred twenty-two million, eight hundred seventy-two thousand, four hundred three".