20001213201 has 16 divisors (see below), whose sum is σ = 28699913088. Its totient is φ = 12344044800.

The previous prime is 20001213187. The next prime is 20001213217. The reversal of 20001213201 is 10231210002.

It is not a de Polignac number, because 20001213201 - 2¹⁰ = 20001212177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001213251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3211485 + ... + 3217706.

It is an arithmetic number, because the mean of its divisors is an integer number (1793744568).

Almost surely, 2^20001213201 is an apocalyptic number.

It is an amenable number.

20001213201 is a deficient number, since it is larger than the sum of its proper divisors (8698699887).

20001213201 is a wasteful number, since it uses less digits than its factorization.

20001213201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6429272.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20001213201 its reverse (10231210002), we get a palindrome (30232423203).

The spelling of 20001213201 in words is "twenty billion, one million, two hundred thirteen thousand, two hundred one".