22222020042 has 24 divisors (see below), whose sum is σ = 48208919616. Its totient is φ = 7397923176.

The previous prime is 22222020017. The next prime is 22222020083. The reversal of 22222020042 is 24002022222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22222019997 and 22222020024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770178 + ... + 798509.

It is an arithmetic number, because the mean of its divisors is an integer number (2008704984).

Almost surely, 2^22222020042 is an apocalyptic number.

22222020042 is an abundant number, since it is smaller than the sum of its proper divisors (25986899574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22222020042 is a wasteful number, since it uses less digits than its factorization.

22222020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569482 (or 1569479 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22222020042 its reverse (24002022222), we get a palindrome (46224042264).

The spelling of 22222020042 in words is "twenty-two billion, two hundred twenty-two million, twenty thousand, forty-two".