20122010442 has 20 divisors (see below), whose sum is σ = 45088208946. Its totient is φ = 6707336760.

The previous prime is 20122010413. The next prime is 20122010443. The reversal of 20122010442 is 24401022102.

20122010442 is a `hidden beast` number, since 2 + 0 + 1 + 220 + 1 + 0 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11955454281 + 8166556161 = 109341^2 + 90369^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20122010443) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62104809 + ... + 62105132.

Almost surely, 2^20122010442 is an apocalyptic number.

20122010442 is an abundant number, since it is smaller than the sum of its proper divisors (24966198504).

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

20122010442 is a wasteful number, since it uses less digits than its factorization.

20122010442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124209955 (or 124209946 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20122010442 its reverse (24401022102), we get a palindrome (44523032544).

The spelling of 20122010442 in words is "twenty billion, one hundred twenty-two million, ten thousand, four hundred forty-two".