21441113244242 has 4 divisors (see below), whose sum is σ = 32161669866366. Its totient is φ = 10720556622120.

The previous prime is 21441113244223. The next prime is 21441113244259. The reversal of 21441113244242 is 24244231114412.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 14070968774641 + 7370144469601 = 3751129^2 + 2714801^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360278311059 + ... + 5360278311062.

Almost surely, 2^{21441113244242} is an apocalyptic number.

21441113244242 is a deficient number, since it is larger than the sum of its proper divisors (10720556622124).

21441113244242 is a wasteful number, since it uses less digits than its factorization.

21441113244242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10720556622123.

The product of its digits is 49152, while the sum is 35.

Adding to 21441113244242 its reverse (24244231114412), we get a palindrome (45685344358654).

The spelling of 21441113244242 in words is "twenty-one trillion, four hundred forty-one billion, one hundred thirteen million, two hundred forty-four thousand, two hundred forty-two".