21141224342 has 24 divisors (see below), whose sum is σ = 38830823640. Its totient is φ = 8583654240.

The previous prime is 21141224339. The next prime is 21141224347. The reversal of 21141224342 is 24342214112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141224347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5675159 + ... + 5678882.

It is an arithmetic number, because the mean of its divisors is an integer number (1617950985).

Almost surely, 2^21141224342 is an apocalyptic number.

21141224342 is a deficient number, since it is larger than the sum of its proper divisors (17689599298).

21141224342 is a wasteful number, since it uses less digits than its factorization.

21141224342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354076 (or 11354069 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 21141224342 its reverse (24342214112), we get a palindrome (45483438454).

The spelling of 21141224342 in words is "twenty-one billion, one hundred forty-one million, two hundred twenty-four thousand, three hundred forty-two".