2001021012201 has 8 divisors (see below), whose sum is σ = 2808450543520. Its totient is φ = 1263802744512.

The previous prime is 2001021012197. The next prime is 2001021012203. The reversal of 2001021012201 is 1022101201002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001021012201 - 2² = 2001021012197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001021012203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17552815840 + ... + 17552815953.

It is an arithmetic number, because the mean of its divisors is an integer number (351056317940).

Almost surely, 2^{2001021012201} is an apocalyptic number.

It is an amenable number.

2001021012201 is a deficient number, since it is larger than the sum of its proper divisors (807429531319).

2001021012201 is a wasteful number, since it uses less digits than its factorization.

2001021012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35105631815.

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

Adding to 2001021012201 its reverse (1022101201002), we get a palindrome (3023122213203).

The spelling of 2001021012201 in words is "two trillion, one billion, twenty-one million, twelve thousand, two hundred one".