101021099 has 2 divisors, whose sum is σ = 101021100. Its totient is φ = 101021098.

The previous prime is 101021093. The next prime is 101021117. The reversal of 101021099 is 990120101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101021099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101021093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510549 + 50510550.

It is an arithmetic number, because the mean of its divisors is an integer number (50510550).

Almost surely, 2^101021099 is an apocalyptic number.

101021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021099 is an equidigital number, since it uses as much as digits as its factorization.

101021099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 101021099 is about 10050.9252807888. The cubic root of 101021099 is about 465.7333769858.

The spelling of 101021099 in words is "one hundred one million, twenty-one thousand, ninety-nine".