2002001201001 has 12 divisors (see below), whose sum is σ = 2897717464512. Its totient is φ = 1331926874136.

The previous prime is 2002001200961. The next prime is 2002001201087. The reversal of 2002001201001 is 1001021002002.

It is a de Polignac number, because none of the positive numbers 2^k-2002001201001 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 (2002001201701) 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, 228378141 + ... + 228386906.

It is an arithmetic number, because the mean of its divisors is an integer number (241476455376).

Almost surely, 2^{2002001201001} is an apocalyptic number.

It is an amenable number.

2002001201001 is a deficient number, since it is larger than the sum of its proper divisors (895716263511).

2002001201001 is a wasteful number, since it uses less digits than its factorization.

2002001201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456765540 (or 456765537 counting only the distinct ones).

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

Adding to 2002001201001 its reverse (1001021002002), we get a palindrome (3003022203003).

The spelling of 2002001201001 in words is "two trillion, two billion, one million, two hundred one thousand, one".