1222011403 has 4 divisors (see below), whose sum is σ = 1223817120. Its totient is φ = 1220205688.

The previous prime is 1222011389. The next prime is 1222011419. The reversal of 1222011403 is 3041102221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3041102221 = 523 ⋅5814727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222011403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222011463) 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, 901843 + ... + 903196.

It is an arithmetic number, because the mean of its divisors is an integer number (305954280).

Almost surely, 2^1222011403 is an apocalyptic number.

1222011403 is a deficient number, since it is larger than the sum of its proper divisors (1805717).

1222011403 is an equidigital number, since it uses as much as digits as its factorization.

1222011403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805716.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1222011403 is about 34957.2796853531. The cubic root of 1222011403 is about 1069.1166328372.

Adding to 1222011403 its reverse (3041102221), we get a palindrome (4263113624).

The spelling of 1222011403 in words is "one billion, two hundred twenty-two million, eleven thousand, four hundred three".