20222404642 has 16 divisors (see below), whose sum is σ = 34232284800. Its totient is φ = 8875036240.

The previous prime is 20222404627. The next prime is 20222404669. The reversal of 20222404642 is 24640422202.

It is a self number, because there is not a number n which added to its sum of digits gives 20222404642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15847642 + ... + 15848917.

It is an arithmetic number, because the mean of its divisors is an integer number (2139517800).

Almost surely, 2^20222404642 is an apocalyptic number.

20222404642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20222404642 is a deficient number, since it is larger than the sum of its proper divisors (14009880158).

20222404642 is a wasteful number, since it uses less digits than its factorization.

20222404642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31696601.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20222404642 its reverse (24640422202), we get a palindrome (44862826844).

The spelling of 20222404642 in words is "twenty billion, two hundred twenty-two million, four hundred four thousand, six hundred forty-two".