1151222442 has 16 divisors (see below), whose sum is σ = 2325242592. Its totient is φ = 379941200.

The previous prime is 1151222431. The next prime is 1151222447. The reversal of 1151222442 is 2442221511.

It is a super-2 number, since 2×1151222442² = 2650626221928886728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1151222447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949248 + ... + 950459.

It is an arithmetic number, because the mean of its divisors is an integer number (145327662).

Almost surely, 2^1151222442 is an apocalyptic number.

1151222442 is an abundant number, since it is smaller than the sum of its proper divisors (1174020150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151222442 is a wasteful number, since it uses less digits than its factorization.

1151222442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899813.

The product of its digits is 1280, while the sum is 24.

The square root of 1151222442 is about 33929.6690523206. The cubic root of 1151222442 is about 1048.0606506136.

Adding to 1151222442 its reverse (2442221511), we get a palindrome (3593443953).

The spelling of 1151222442 in words is "one billion, one hundred fifty-one million, two hundred twenty-two thousand, four hundred forty-two".