20002212221 has 8 divisors (see below), whose sum is σ = 20083728000. Its totient is φ = 19920835440.

The previous prime is 20002212203. The next prime is 20002212277. The reversal of 20002212221 is 12221220002.

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 20002212221 - 2⁶ = 20002212157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002212196 and 20002212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002212421) 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, 258656 + ... + 326966.

It is an arithmetic number, because the mean of its divisors is an integer number (2510466000).

Almost surely, 2^20002212221 is an apocalyptic number.

It is an amenable number.

20002212221 is a deficient number, since it is larger than the sum of its proper divisors (81515779).

20002212221 is an equidigital number, since it uses as much as digits as its factorization.

20002212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69499.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20002212221 its reverse (12221220002), we get a palindrome (32223432223).

The spelling of 20002212221 in words is "twenty billion, two million, two hundred twelve thousand, two hundred twenty-one".