2001111020010 has 24 divisors (see below), whose sum is σ = 5202888652260. Its totient is φ = 533629605312.

The previous prime is 2001111019991. The next prime is 2001111020063. The reversal of 2001111020010 is 100201111002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1602080027289 + 399030992721 = 1265733^2 + 631689^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2001111019974 and 2001111020001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11117283355 + ... + 11117283534.

Almost surely, 2^{2001111020010} is an apocalyptic number.

2001111020010 is an abundant number, since it is smaller than the sum of its proper divisors (3201777632250).

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

2001111020010 is a wasteful number, since it uses less digits than its factorization.

2001111020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234566902 (or 22234566899 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2001111020010 its reverse (100201111002), we get a palindrome (2101312131012).

The spelling of 2001111020010 in words is "two trillion, one billion, one hundred eleven million, twenty thousand, ten".