1142022191 has 2 divisors, whose sum is σ = 1142022192. Its totient is φ = 1142022190.

The previous prime is 1142022187. The next prime is 1142022223. The reversal of 1142022191 is 1912202411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1142022191 - 2² = 1142022187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142022181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571011095 + 571011096.

It is an arithmetic number, because the mean of its divisors is an integer number (571011096).

Almost surely, 2^1142022191 is an apocalyptic number.

1142022191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142022191 is an equidigital number, since it uses as much as digits as its factorization.

1142022191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1142022191 is about 33793.8188283005. The cubic root of 1142022191 is about 1045.2612431110.

The spelling of 1142022191 in words is "one billion, one hundred forty-two million, twenty-two thousand, one hundred ninety-one".