1222245542 has 16 divisors (see below), whose sum is σ = 2167529760. Its totient is φ = 505756608.

The previous prime is 1222245529. The next prime is 1222245559. The reversal of 1222245542 is 2455422221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504823 + ... + 1505634.

It is an arithmetic number, because the mean of its divisors is an integer number (135470610).

Almost surely, 2^1222245542 is an apocalyptic number.

1222245542 is a deficient number, since it is larger than the sum of its proper divisors (945284218).

1222245542 is a wasteful number, since it uses less digits than its factorization.

1222245542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010495.

The product of its digits is 12800, while the sum is 29.

The square root of 1222245542 is about 34960.6284554497. The cubic root of 1222245542 is about 1069.1849098633.

Adding to 1222245542 its reverse (2455422221), we get a palindrome (3677667763).

The spelling of 1222245542 in words is "one billion, two hundred twenty-two million, two hundred forty-five thousand, five hundred forty-two".