101999077 has 2 divisors, whose sum is σ = 101999078. Its totient is φ = 101999076.

The previous prime is 101999069. The next prime is 101999081. The reversal of 101999077 is 770999101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86007076 + 15992001 = 9274^2 + 3999^2 .

It is an emirp because it is prime and its reverse (770999101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101999077 - 2³ = 101999069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101999017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50999538 + 50999539.

It is an arithmetic number, because the mean of its divisors is an integer number (50999539).

Almost surely, 2^101999077 is an apocalyptic number.

It is an amenable number.

101999077 is a deficient number, since it is larger than the sum of its proper divisors (1).

101999077 is an equidigital number, since it uses as much as digits as its factorization.

101999077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 101999077 is about 10099.4592429496. The cubic root of 101999077 is about 467.2314634981.

The spelling of 101999077 in words is "one hundred one million, nine hundred ninety-nine thousand, seventy-seven".