20011201 has 8 divisors (see below), whose sum is σ = 23080640. Its totient is φ = 16994448.

The previous prime is 20011177. The next prime is 20011249. The reversal of 20011201 is 10211002.

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 20011201 - 2¹⁷ = 19880129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011291) 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, 12351 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (2885080).

Almost surely, 2^20011201 is an apocalyptic number.

It is an amenable number.

20011201 is a deficient number, since it is larger than the sum of its proper divisors (3069439).

20011201 is a wasteful number, since it uses less digits than its factorization.

20011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26343.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 20011201 is about 4473.3880895804. The cubic root of 20011201 is about 271.4924258554.

Adding to 20011201 its reverse (10211002), we get a palindrome (30222203).

The spelling of 20011201 in words is "twenty million, eleven thousand, two hundred one".