20422200242 has 4 divisors (see below), whose sum is σ = 30633300366. Its totient is φ = 10211100120.

The previous prime is 20422200223. The next prime is 20422200251. The reversal of 20422200242 is 24200222402.

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., 19206910921 + 1215289321 = 138589^2 + 34861^2 .

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 as a sum of consecutive naturals, namely, 5105550059 + ... + 5105550062.

Almost surely, 2^20422200242 is an apocalyptic number.

20422200242 is a deficient number, since it is larger than the sum of its proper divisors (10211100124).

20422200242 is a wasteful number, since it uses less digits than its factorization.

20422200242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211100123.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20422200242 its reverse (24200222402), we get a palindrome (44622422644).

The spelling of 20422200242 in words is "twenty billion, four hundred twenty-two million, two hundred thousand, two hundred forty-two".