21321033123110 has 32 divisors (see below), whose sum is σ = 43868893738752. Its totient is φ = 7308654708960.

The previous prime is 21321033123077. The next prime is 21321033123167. The reversal of 21321033123110 is 1132133012312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29089412 + ... + 29813351.

It is an arithmetic number, because the mean of its divisors is an integer number (1370902929336).

Almost surely, 2^{21321033123110} is an apocalyptic number.

21321033123110 is an abundant number, since it is smaller than the sum of its proper divisors (22547860615642).

21321033123110 is a wasteful number, since it uses less digits than its factorization.

21321033123110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58907948.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21321033123110 its reverse (1132133012312), we get a palindrome (22453166135422).

The spelling of 21321033123110 in words is "twenty-one trillion, three hundred twenty-one billion, thirty-three million, one hundred twenty-three thousand, one hundred ten".