2001200101002 has 12 divisors (see below), whose sum is σ = 4335933552210. Its totient is φ = 667066700328.

The previous prime is 2001200100973. The next prime is 2001200101037. The reversal of 2001200101002 is 2001010021002.

It can be written as a sum of positive squares in only one way, i.e., 2000835711081 + 364389921 = 1414509^2 + 19089^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55588891677 + ... + 55588891712.

Almost surely, 2^{2001200101002} is an apocalyptic number.

2001200101002 is an abundant number, since it is smaller than the sum of its proper divisors (2334733451208).

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

2001200101002 is a wasteful number, since it uses less digits than its factorization.

2001200101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111177783397 (or 111177783394 counting only the distinct ones).

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

Adding to 2001200101002 its reverse (2001010021002), we get a palindrome (4002210122004).

The spelling of 2001200101002 in words is "two trillion, one billion, two hundred million, one hundred one thousand, two".