2001211201 has 8 divisors (see below), whose sum is σ = 2218929408. Its totient is φ = 1789458000.

The previous prime is 2001211181. The next prime is 2001211237. The reversal of 2001211201 is 1021121002.

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

It is not a de Polignac number, because 2001211201 - 2⁹ = 2001210689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001211801) 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, 1490545 + ... + 1491886.

It is an arithmetic number, because the mean of its divisors is an integer number (277366176).

Almost surely, 2^2001211201 is an apocalyptic number.

It is an amenable number.

2001211201 is a deficient number, since it is larger than the sum of its proper divisors (217718207).

2001211201 is a wasteful number, since it uses less digits than its factorization.

2001211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982503.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2001211201 is about 44734.8991392626. The cubic root of 2001211201 is about 1260.1753348427.

Adding to 2001211201 its reverse (1021121002), we get a palindrome (3022332203).

It can be divided in two parts, 20012 and 11201, that added together give a palindrome (31213).

The spelling of 2001211201 in words is "two billion, one million, two hundred eleven thousand, two hundred one".