20002221211 has 8 divisors (see below), whose sum is σ = 23135099904. Its totient is φ = 16938197160.

The previous prime is 20002221209. The next prime is 20002221223. The reversal of 20002221211 is 11212220002.

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 20002221211 - 2¹ = 20002221209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002221191 and 20002221200.

It is not an unprimeable number, because it can be changed into a prime (20002221511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17213035 + ... + 17214196.

It is an arithmetic number, because the mean of its divisors is an integer number (2891887488).

Almost surely, 2^20002221211 is an apocalyptic number.

20002221211 is a deficient number, since it is larger than the sum of its proper divisors (3132878693).

20002221211 is an equidigital number, since it uses as much as digits as its factorization.

20002221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34427321.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002221211 its reverse (11212220002), we get a palindrome (31214441213).

The spelling of 20002221211 in words is "twenty billion, two million, two hundred twenty-one thousand, two hundred eleven".