999101020 has 12 divisors (see below), whose sum is σ = 2098112184. Its totient is φ = 399640400.

The previous prime is 999101017. The next prime is 999101023. The reversal of 999101020 is 20101999.

999101020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (999101017) and next prime (999101023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999101023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24977506 + ... + 24977545.

It is an arithmetic number, because the mean of its divisors is an integer number (174842682).

Almost surely, 2^999101020 is an apocalyptic number.

It is an amenable number.

999101020 is an abundant number, since it is smaller than the sum of its proper divisors (1099011164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999101020 is a wasteful number, since it uses less digits than its factorization.

999101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49955060 (or 49955058 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 999101020 is about 31608.5592838396. The cubic root of 999101020 is about 999.7002501590.

The spelling of 999101020 in words is "nine hundred ninety-nine million, one hundred one thousand, twenty".