20022321142 has 4 divisors (see below), whose sum is σ = 30033481716. Its totient is φ = 10011160570.

The previous prime is 20022321139. The next prime is 20022321157. The reversal of 20022321142 is 24112322002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005580284 + ... + 5005580287.

It is an arithmetic number, because the mean of its divisors is an integer number (7508370429).

Almost surely, 2^20022321142 is an apocalyptic number.

20022321142 is a deficient number, since it is larger than the sum of its proper divisors (10011160574).

20022321142 is a wasteful number, since it uses less digits than its factorization.

20022321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011160573.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20022321142 its reverse (24112322002), we get a palindrome (44134643144).

The spelling of 20022321142 in words is "twenty billion, twenty-two million, three hundred twenty-one thousand, one hundred forty-two".