1151222147 has 2 divisors, whose sum is σ = 1151222148. Its totient is φ = 1151222146.

The previous prime is 1151222117. The next prime is 1151222263. The reversal of 1151222147 is 7412221511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1151222147 - 2¹⁸ = 1150960003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1151222117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575611073 + 575611074.

It is an arithmetic number, because the mean of its divisors is an integer number (575611074).

Almost surely, 2^1151222147 is an apocalyptic number.

1151222147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151222147 is an equidigital number, since it uses as much as digits as its factorization.

1151222147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 26.

The square root of 1151222147 is about 33929.6647050925. The cubic root of 1151222147 is about 1048.0605610920.

Adding to 1151222147 its reverse (7412221511), we get a palindrome (8563443658).

The spelling of 1151222147 in words is "one billion, one hundred fifty-one million, two hundred twenty-two thousand, one hundred forty-seven".