20422221293 has 4 divisors (see below), whose sum is σ = 20757011868. Its totient is φ = 20087430720.

The previous prime is 20422221277. The next prime is 20422221301. The reversal of 20422221293 is 39212222402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5007260644 + 15414960649 = 70762^2 + 124157^2 .

It is a cyclic number.

It is not a de Polignac number, because 20422221293 - 2⁴ = 20422221277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422221233) 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 3 ways as a sum of consecutive naturals, for example, 167395196 + ... + 167395317.

It is an arithmetic number, because the mean of its divisors is an integer number (5189252967).

Almost surely, 2^20422221293 is an apocalyptic number.

It is an amenable number.

20422221293 is a deficient number, since it is larger than the sum of its proper divisors (334790575).

20422221293 is an equidigital number, since it uses as much as digits as its factorization.

20422221293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334790574.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 20422221293 its reverse (39212222402), we get a palindrome (59634443695).

The spelling of 20422221293 in words is "twenty billion, four hundred twenty-two million, two hundred twenty-one thousand, two hundred ninety-three".