1142216851 has 2 divisors, whose sum is σ = 1142216852. Its totient is φ = 1142216850.

The previous prime is 1142216819. The next prime is 1142216921. The reversal of 1142216851 is 1586122411.

It is a weak prime.

It is an emirp because it is prime and its reverse (1586122411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142216851 - 2⁵ = 1142216819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142216051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571108425 + 571108426.

It is an arithmetic number, because the mean of its divisors is an integer number (571108426).

Almost surely, 2^1142216851 is an apocalyptic number.

1142216851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142216851 is an equidigital number, since it uses as much as digits as its factorization.

1142216851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 31.

The square root of 1142216851 is about 33796.6988180799. The cubic root of 1142216851 is about 1045.3206287037.

The spelling of 1142216851 in words is "one billion, one hundred forty-two million, two hundred sixteen thousand, eight hundred fifty-one".