1144222091 has 2 divisors, whose sum is σ = 1144222092. Its totient is φ = 1144222090.

The previous prime is 1144222069. The next prime is 1144222103. The reversal of 1144222091 is 1902224411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144222091 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144222091.

It is not a weakly prime, because it can be changed into another prime (1144222061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572111045 + 572111046.

It is an arithmetic number, because the mean of its divisors is an integer number (572111046).

Almost surely, 2^1144222091 is an apocalyptic number.

1144222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144222091 is an equidigital number, since it uses as much as digits as its factorization.

1144222091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1144222091 is about 33826.3520202815. The cubic root of 1144222091 is about 1045.9319817650.

It can be divided in two parts, 11442 and 22091, that added together give a palindrome (33533).

The spelling of 1144222091 in words is "one billion, one hundred forty-four million, two hundred twenty-two thousand, ninety-one".