2001120099 has 96 divisors (see below), whose sum is σ = 3265733376. Its totient is φ = 1079470080.

The previous prime is 2001120047. The next prime is 2001120103. The reversal of 2001120099 is 9900211002.

It is not a de Polignac number, because 2001120099 - 2⁷ = 2001119971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001120899) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18702004 + ... + 18702110.

It is an arithmetic number, because the mean of its divisors is an integer number (34018056).

Almost surely, 2^2001120099 is an apocalyptic number.

2001120099 is a deficient number, since it is larger than the sum of its proper divisors (1264613277).

2001120099 is a wasteful number, since it uses less digits than its factorization.

2001120099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 2001120099 is about 44733.8808846270. The cubic root of 2001120099 is about 1260.1562120509.

The spelling of 2001120099 in words is "two billion, one million, one hundred twenty thousand, ninety-nine".