20001522242 has 32 divisors (see below), whose sum is σ = 32424026544. Its totient is φ = 9199008000.

The previous prime is 20001522239. The next prime is 20001522293. The reversal of 20001522242 is 24222510002.

It can be written as a sum of positive squares in 8 ways, for example, as 18452233921 + 1549288321 = 135839^2 + 39361^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12338192 + ... + 12339812.

Almost surely, 2^20001522242 is an apocalyptic number.

20001522242 is a deficient number, since it is larger than the sum of its proper divisors (12422504302).

20001522242 is a wasteful number, since it uses less digits than its factorization.

20001522242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014.

The product of its (nonzero) digits is 640, while the sum is 20.

The spelling of 20001522242 in words is "twenty billion, one million, five hundred twenty-two thousand, two hundred forty-two".