21232241142 has 32 divisors (see below), whose sum is σ = 48590755584. Its totient is φ = 6058864800.

The previous prime is 21232241141. The next prime is 21232241153. The reversal of 21232241142 is 24114223212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232241141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277609 + ... + 345732.

It is an arithmetic number, because the mean of its divisors is an integer number (1518461112).

Almost surely, 2^21232241142 is an apocalyptic number.

21232241142 is an abundant number, since it is smaller than the sum of its proper divisors (27358514442).

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

21232241142 is a wasteful number, since it uses less digits than its factorization.

21232241142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624164.

The product of its digits is 1536, while the sum is 24.

Adding to 21232241142 its reverse (24114223212), we get a palindrome (45346464354).

The spelling of 21232241142 in words is "twenty-one billion, two hundred thirty-two million, two hundred forty-one thousand, one hundred forty-two".