20001211210 has 8 divisors (see below), whose sum is σ = 36002180196. Its totient is φ = 8000484480.

The previous prime is 20001211199. The next prime is 20001211211. The reversal of 20001211210 is 1211210002.

It can be written as a sum of positive squares in 2 ways, for example, as 17848158409 + 2153052801 = 133597^2 + 46401^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2000121121 = 20001211210 / (2 + 0 + 0 + 0 + 1 + 2 + 1 + 1 + 2 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (20001211211) 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 3 ways as a sum of consecutive naturals, for example, 1000060551 + ... + 1000060570.

Almost surely, 2^20001211210 is an apocalyptic number.

20001211210 is a deficient number, since it is larger than the sum of its proper divisors (16000968986).

20001211210 is a wasteful number, since it uses less digits than its factorization.

20001211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000121128.

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

Adding to 20001211210 its reverse (1211210002), we get a palindrome (21212421212).

The spelling of 20001211210 in words is "twenty billion, one million, two hundred eleven thousand, two hundred ten".