2142101191 has 2 divisors, whose sum is σ = 2142101192. Its totient is φ = 2142101190.

The previous prime is 2142101183. The next prime is 2142101239. The reversal of 2142101191 is 1911012412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2142101191 - 2³ = 2142101183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142104191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071050595 + 1071050596.

It is an arithmetic number, because the mean of its divisors is an integer number (1071050596).

Almost surely, 2^2142101191 is an apocalyptic number.

2142101191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142101191 is an equidigital number, since it uses as much as digits as its factorization.

2142101191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 2142101191 is about 46282.8390550969. The cubic root of 2142101191 is about 1289.0803675313.

The spelling of 2142101191 in words is "two billion, one hundred forty-two million, one hundred one thousand, one hundred ninety-one".