101025099 has 12 divisors (see below), whose sum is σ = 166771696. Its totient is φ = 57728592.

The previous prime is 101025091. The next prime is 101025139. The reversal of 101025099 is 990520101.

It is a happy number.

It is not a de Polignac number, because 101025099 - 2³ = 101025091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101025091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801724 + ... + 801849.

Almost surely, 2^101025099 is an apocalyptic number.

101025099 is a deficient number, since it is larger than the sum of its proper divisors (65746597).

101025099 is a wasteful number, since it uses less digits than its factorization.

101025099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603586 (or 1603583 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 101025099 is about 10051.1242654740. The cubic root of 101025099 is about 465.7395239159.

The spelling of 101025099 in words is "one hundred one million, twenty-five thousand, ninety-nine".