20022321220291 has 4 divisors (see below), whose sum is σ = 21562499775712. Its totient is φ = 18482142664872.

The previous prime is 20022321220211. The next prime is 20022321220339. The reversal of 20022321220291 is 19202212322002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20022321220291 - 2⁷ = 20022321220163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022321220211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770089277691 + ... + 770089277716.

It is an arithmetic number, because the mean of its divisors is an integer number (5390624943928).

Almost surely, 2^{20022321220291} is an apocalyptic number.

20022321220291 is a deficient number, since it is larger than the sum of its proper divisors (1540178555421).

20022321220291 is a wasteful number, since it uses less digits than its factorization.

20022321220291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540178555420.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 20022321220291 its reverse (19202212322002), we get a palindrome (39224533542293).

The spelling of 20022321220291 in words is "twenty trillion, twenty-two billion, three hundred twenty-one million, two hundred twenty thousand, two hundred ninety-one".