21132044111342 has 4 divisors (see below), whose sum is σ = 31698066167016. Its totient is φ = 10566022055670.

The previous prime is 21132044111341. The next prime is 21132044111357. The reversal of 21132044111342 is 24311144023112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132044111341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5283011027834 + ... + 5283011027837.

It is an arithmetic number, because the mean of its divisors is an integer number (7924516541754).

Almost surely, 2^{21132044111342} is an apocalyptic number.

21132044111342 is a deficient number, since it is larger than the sum of its proper divisors (10566022055674).

21132044111342 is a wasteful number, since it uses less digits than its factorization.

21132044111342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566022055673.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 21132044111342 its reverse (24311144023112), we get a palindrome (45443188134454).

The spelling of 21132044111342 in words is "twenty-one trillion, one hundred thirty-two billion, forty-four million, one hundred eleven thousand, three hundred forty-two".