20001212201 has 8 divisors (see below), whose sum is σ = 21089423520. Its totient is φ = 18916552512.

The previous prime is 20001212191. The next prime is 20001212221. The reversal of 20001212201 is 10221210002.

It is a happy number.

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 20001212201 - 2²² = 19997017897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001212221) 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, 876335 + ... + 898868.

It is an arithmetic number, because the mean of its divisors is an integer number (2636177940).

Almost surely, 2^20001212201 is an apocalyptic number.

It is an amenable number.

20001212201 is a deficient number, since it is larger than the sum of its proper divisors (1088211319).

20001212201 is a wasteful number, since it uses less digits than its factorization.

20001212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775815.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001212201 its reverse (10221210002), we get a palindrome (30222422203).

The spelling of 20001212201 in words is "twenty billion, one million, two hundred twelve thousand, two hundred one".