9891112002 has 32 divisors (see below), whose sum is σ = 19988899200. Its totient is φ = 3262627200.

The previous prime is 9891112001. The next prime is 9891112009. The reversal of 9891112002 is 2002111989.

It is a super-2 number, since 2×9891112002² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9891112001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1592499 + ... + 1598697.

It is an arithmetic number, because the mean of its divisors is an integer number (624653100).

Almost surely, 2^9891112002 is an apocalyptic number.

9891112002 is an abundant number, since it is smaller than the sum of its proper divisors (10097787198).

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

9891112002 is a wasteful number, since it uses less digits than its factorization.

9891112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 9891112002 is about 99454.0698111445. The cubic root of 9891112002 is about 2146.5863985596.

The spelling of 9891112002 in words is "nine billion, eight hundred ninety-one million, one hundred twelve thousand, two".