9999900102 has 16 divisors (see below), whose sum is σ = 20001283632. Its totient is φ = 3333052800.

The previous prime is 9999900101. The next prime is 9999900103. The reversal of 9999900102 is 2010099999.

It is an interprime number because it is at equal distance from previous prime (9999900101) and next prime (9999900103).

It is a super-2 number, since 2×9999900102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999900101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38298 + ... + 146514.

It is an arithmetic number, because the mean of its divisors is an integer number (1250080227).

Almost surely, 2^9999900102 is an apocalyptic number.

9999900102 is an abundant number, since it is smaller than the sum of its proper divisors (10001383530).

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

9999900102 is a wasteful number, since it uses less digits than its factorization.

9999900102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123623.

The product of its (nonzero) digits is 118098, while the sum is 48.

The square root of 9999900102 is about 99999.5005087525. The cubic root of 9999900102 is about 2154.4275158841.

The spelling of 9999900102 in words is "nine billion, nine hundred ninety-nine million, nine hundred thousand, one hundred two".