2001200102201 has 4 divisors (see below), whose sum is σ = 2001242616912. Its totient is φ = 2001157587492.

The previous prime is 2001200102123. The next prime is 2001200102221. The reversal of 2001200102201 is 1022010021002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001200102201 - 2²² = 2001195907897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001200102221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21186671 + ... + 21280916.

It is an arithmetic number, because the mean of its divisors is an integer number (500310654228).

Almost surely, 2^{2001200102201} is an apocalyptic number.

It is an amenable number.

2001200102201 is a deficient number, since it is larger than the sum of its proper divisors (42514711).

2001200102201 is an equidigital number, since it uses as much as digits as its factorization.

2001200102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42514710.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001200102201 its reverse (1022010021002), we get a palindrome (3023210123203).

The spelling of 2001200102201 in words is "two trillion, one billion, two hundred million, one hundred two thousand, two hundred one".