21100321120313 has 8 divisors (see below), whose sum is σ = 21510470947968. Its totient is φ = 20690616869104.

The previous prime is 21100321120309. The next prime is 21100321120429. The reversal of 21100321120313 is 31302112300112.

It is a happy number.

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 21100321120313 - 2² = 21100321120309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100321120213) 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, 111298481 + ... + 111487902.

It is an arithmetic number, because the mean of its divisors is an integer number (2688808868496).

Almost surely, 2^{21100321120313} is an apocalyptic number.

It is an amenable number.

21100321120313 is a deficient number, since it is larger than the sum of its proper divisors (410149827655).

21100321120313 is a wasteful number, since it uses less digits than its factorization.

21100321120313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222788223.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21100321120313 its reverse (31302112300112), we get a palindrome (52402433420425).

The spelling of 21100321120313 in words is "twenty-one trillion, one hundred billion, three hundred twenty-one million, one hundred twenty thousand, three hundred thirteen".