20422221443 has 12 divisors (see below), whose sum is σ = 22154978448. Its totient is φ = 18816351840.

The previous prime is 20422221439. The next prime is 20422221511. The reversal of 20422221443 is 34412222402.

It is not a de Polignac number, because 20422221443 - 2² = 20422221439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20422221643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20255 + ... + 203112.

It is an arithmetic number, because the mean of its divisors is an integer number (1846248204).

Almost surely, 2^20422221443 is an apocalyptic number.

20422221443 is a deficient number, since it is larger than the sum of its proper divisors (1732757005).

20422221443 is a wasteful number, since it uses less digits than its factorization.

20422221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223934 (or 223921 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20422221443 its reverse (34412222402), we get a palindrome (54834443845).

The spelling of 20422221443 in words is "twenty billion, four hundred twenty-two million, two hundred twenty-one thousand, four hundred forty-three".