20012001211 has 8 divisors (see below), whose sum is σ = 20480649200. Its totient is φ = 19543501152.

The previous prime is 20012001193. The next prime is 20012001221. The reversal of 20012001211 is 11210021002.

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 20012001211 - 2⁷ = 20012001083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012001221) 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, 265321 + ... + 332293.

It is an arithmetic number, because the mean of its divisors is an integer number (2560081150).

Almost surely, 2^20012001211 is an apocalyptic number.

20012001211 is a deficient number, since it is larger than the sum of its proper divisors (468647989).

20012001211 is an equidigital number, since it uses as much as digits as its factorization.

20012001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73965.

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

Adding to 20012001211 its reverse (11210021002), we get a palindrome (31222022213).

The spelling of 20012001211 in words is "twenty billion, twelve million, one thousand, two hundred eleven".