21120012341 has 8 divisors (see below), whose sum is σ = 21189409824. Its totient is φ = 21050683920.

The previous prime is 21120012317. The next prime is 21120012359. The reversal of 21120012341 is 14321002112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21120012341 - 2³⁴ = 3940143157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120015341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635426 + ... + 667836.

It is an arithmetic number, because the mean of its divisors is an integer number (2648676228).

Almost surely, 2^21120012341 is an apocalyptic number.

It is an amenable number.

21120012341 is a deficient number, since it is larger than the sum of its proper divisors (69397483).

21120012341 is a wasteful number, since it uses less digits than its factorization.

21120012341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34531.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21120012341 its reverse (14321002112), we get a palindrome (35441014453).

The spelling of 21120012341 in words is "twenty-one billion, one hundred twenty million, twelve thousand, three hundred forty-one".