2001100001202 has 48 divisors (see below), whose sum is σ = 4475860047360. Its totient is φ = 645475521600.

The previous prime is 2001100001161. The next prime is 2001100001203. The reversal of 2001100001202 is 2021000011002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2001100001203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9498427 + ... + 9706817.

It is an arithmetic number, because the mean of its divisors is an integer number (93247084320).

Almost surely, 2^{2001100001202} is an apocalyptic number.

2001100001202 is an abundant number, since it is smaller than the sum of its proper divisors (2474760046158).

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

2001100001202 is a wasteful number, since it uses less digits than its factorization.

2001100001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225639 (or 225636 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2001100001202 its reverse (2021000011002), we get a palindrome (4022100012204).

The spelling of 2001100001202 in words is "two trillion, one billion, one hundred million, one thousand, two hundred two".