2001022201 has 8 divisors (see below), whose sum is σ = 2051002944. Its totient is φ = 1951633200.

The previous prime is 2001022187. The next prime is 2001022211. The reversal of 2001022201 is 1022201002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001022201 - 2⁷ = 2001022073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001022211) 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, 141085 + ... + 154618.

It is an arithmetic number, because the mean of its divisors is an integer number (256375368).

Almost surely, 2^2001022201 is an apocalyptic number.

It is an amenable number.

2001022201 is a deficient number, since it is larger than the sum of its proper divisors (49980743).

2001022201 is a wasteful number, since it uses less digits than its factorization.

2001022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295871.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001022201 is about 44732.7866446972. The cubic root of 2001022201 is about 1260.1356620957.

Adding to 2001022201 its reverse (1022201002), we get a palindrome (3023223203).

The spelling of 2001022201 in words is "two billion, one million, twenty-two thousand, two hundred one".