1222122545 has 16 divisors (see below), whose sum is σ = 1701072768. Its totient is φ = 825517440.

The previous prime is 1222122527. The next prime is 1222122557. The reversal of 1222122545 is 5452212221.

It is not a de Polignac number, because 1222122545 - 2¹⁰ = 1222121521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258236 + ... + 262925.

It is an arithmetic number, because the mean of its divisors is an integer number (106317048).

Almost surely, 2^1222122545 is an apocalyptic number.

It is an amenable number.

1222122545 is a deficient number, since it is larger than the sum of its proper divisors (478950223).

1222122545 is an equidigital number, since it uses as much as digits as its factorization.

1222122545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521240.

The product of its digits is 3200, while the sum is 26.

The square root of 1222122545 is about 34958.8693324026. The cubic root of 1222122545 is about 1069.1490439255.

Adding to 1222122545 its reverse (5452212221), we get a palindrome (6674334766).

The spelling of 1222122545 in words is "one billion, two hundred twenty-two million, one hundred twenty-two thousand, five hundred forty-five".