20000022242 has 4 divisors (see below), whose sum is σ = 30000033366. Its totient is φ = 10000011120.

The previous prime is 20000022233. The next prime is 20000022253. The reversal of 20000022242 is 24222000002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24222000002 = 2 ⋅12111000001.

It can be written as a sum of positive squares in only one way, i.e., 19063601041 + 936421201 = 138071^2 + 30601^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000005559 + ... + 5000005562.

Almost surely, 2^20000022242 is an apocalyptic number.

20000022242 is a deficient number, since it is larger than the sum of its proper divisors (10000011124).

20000022242 is a wasteful number, since it uses less digits than its factorization.

20000022242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000011123.

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20000022242 its reverse (24222000002), we get a palindrome (44222022244).

The spelling of 20000022242 in words is "twenty billion, twenty-two thousand, two hundred forty-two".