2011002002001 has 12 divisors (see below), whose sum is σ = 2904987907380. Its totient is φ = 1340572353120.

The previous prime is 2011002001961. The next prime is 2011002002047. The reversal of 2011002002001 is 1002002001102.

It can be written as a sum of positive squares in 2 ways, for example, as 932530136976 + 1078471865025 = 965676^2 + 1038495^2 .

It is not a de Polignac number, because 2011002002001 - 2¹⁹ = 2011001477713 is a prime.

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 (2011002002071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7837410 + ... + 8089931.

It is an arithmetic number, because the mean of its divisors is an integer number (242082325615).

Almost surely, 2^{2011002002001} is an apocalyptic number.

It is an amenable number.

2011002002001 is a deficient number, since it is larger than the sum of its proper divisors (893985905379).

2011002002001 is a wasteful number, since it uses less digits than its factorization.

2011002002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15941376 (or 15941373 counting only the distinct ones).

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

Adding to 2011002002001 its reverse (1002002001102), we get a palindrome (3013004003103).

The spelling of 2011002002001 in words is "two trillion, eleven billion, two million, two thousand, one".