20121100201 has 8 divisors (see below), whose sum is σ = 20261767680. Its totient is φ = 19980921168.

The previous prime is 20121100177. The next prime is 20121100211. The reversal of 20121100201 is 10200112102.

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 20121100201 - 2¹³ = 20121092009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121100211) 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, 39241 + ... + 204406.

It is an arithmetic number, because the mean of its divisors is an integer number (2532720960).

Almost surely, 2^20121100201 is an apocalyptic number.

It is an amenable number.

20121100201 is a deficient number, since it is larger than the sum of its proper divisors (140667479).

20121100201 is a wasteful number, since it uses less digits than its factorization.

20121100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244223.

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

Adding to 20121100201 its reverse (10200112102), we get a palindrome (30321212303).

The spelling of 20121100201 in words is "twenty billion, one hundred twenty-one million, one hundred thousand, two hundred one".