2001021102201 has 64 divisors (see below), whose sum is σ = 3072715720704. Its totient is φ = 1156037600960.

The previous prime is 2001021102191. The next prime is 2001021102251. The reversal of 2001021102201 is 1022011201002.

It is not a de Polignac number, because 2001021102201 - 2³⁵ = 1966661363833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001021102251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26871646 + ... + 26946008.

It is an arithmetic number, because the mean of its divisors is an integer number (48011183136).

Almost surely, 2^{2001021102201} is an apocalyptic number.

It is an amenable number.

2001021102201 is a deficient number, since it is larger than the sum of its proper divisors (1071694618503).

2001021102201 is a wasteful number, since it uses less digits than its factorization.

2001021102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74715 (or 74693 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001021102201 its reverse (1022011201002), we get a palindrome (3023032303203).

The spelling of 2001021102201 in words is "two trillion, one billion, twenty-one million, one hundred two thousand, two hundred one".