101149891 has 2 divisors, whose sum is σ = 101149892. Its totient is φ = 101149890.

The previous prime is 101149879. The next prime is 101149903. The reversal of 101149891 is 198941101.

It is a balanced prime because it is at equal distance from previous prime (101149879) and next prime (101149903).

It is a cyclic number.

It is not a de Polignac number, because 101149891 - 2¹¹ = 101147843 is a prime.

It is not a weakly prime, because it can be changed into another prime (101149801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50574945 + 50574946.

It is an arithmetic number, because the mean of its divisors is an integer number (50574946).

Almost surely, 2^101149891 is an apocalyptic number.

101149891 is a deficient number, since it is larger than the sum of its proper divisors (1).

101149891 is an equidigital number, since it uses as much as digits as its factorization.

101149891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 34.

The square root of 101149891 is about 10057.3302123377. The cubic root of 101149891 is about 465.9312144046.

The spelling of 101149891 in words is "one hundred one million, one hundred forty-nine thousand, eight hundred ninety-one".