2001129700 has 36 divisors (see below), whose sum is σ = 4443448240. Its totient is φ = 781835040.

The previous prime is 2001129677. The next prime is 2001129773. The reversal of 2001129700 is 79211002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228390 + ... + 236989.

Almost surely, 2^2001129700 is an apocalyptic number.

2001129700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001129700 is an abundant number, since it is smaller than the sum of its proper divisors (2442318540).

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

2001129700 is a wasteful number, since it uses less digits than its factorization.

2001129700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465436 (or 465429 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 2001129700 is about 44733.9881968957. The cubic root of 2001129700 is about 1260.1582273789.

The spelling of 2001129700 in words is "two billion, one million, one hundred twenty-nine thousand, seven hundred".