20422221442 has 16 divisors (see below), whose sum is σ = 35863414272. Its totient is φ = 8538907680.

The previous prime is 20422221439. The next prime is 20422221511. The reversal of 20422221442 is 24412222402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17788818 + ... + 17789965.

It is an arithmetic number, because the mean of its divisors is an integer number (2241463392).

Almost surely, 2^20422221442 is an apocalyptic number.

20422221442 is a deficient number, since it is larger than the sum of its proper divisors (15441192830).

20422221442 is a wasteful number, since it uses less digits than its factorization.

20422221442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35578833.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20422221442 its reverse (24412222402), we get a palindrome (44834443844).

The spelling of 20422221442 in words is "twenty billion, four hundred twenty-two million, two hundred twenty-one thousand, four hundred forty-two".