2022220042 has 4 divisors (see below), whose sum is σ = 3033330066. Its totient is φ = 1011110020.

The previous prime is 2022220019. The next prime is 2022220043. The reversal of 2022220042 is 2400222202.

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

It can be written as a sum of positive squares in only one way, i.e., 1160151721 + 862068321 = 34061^2 + 29361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2022219998 and 2022220025.

It is not an unprimeable number, because it can be changed into a prime (2022220043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505555009 + ... + 505555012.

Almost surely, 2^2022220042 is an apocalyptic number.

2022220042 is a deficient number, since it is larger than the sum of its proper divisors (1011110024).

2022220042 is a wasteful number, since it uses less digits than its factorization.

2022220042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011110023.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 2022220042 is about 44969.1009694435. The cubic root of 2022220042 is about 1264.5697927286.

Adding to 2022220042 its reverse (2400222202), we get a palindrome (4422442244).

The spelling of 2022220042 in words is "two billion, twenty-two million, two hundred twenty thousand, forty-two".