100311112121321 has 4 divisors (see below), whose sum is σ = 104672464822272. Its totient is φ = 95949759420372.

The previous prime is 100311112121317. The next prime is 100311112121357. The reversal of 100311112121321 is 123121211113001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100311112121321 - 2² = 100311112121317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100311112121293 and 100311112121302.

It is not an unprimeable number, because it can be changed into a prime (100311112121021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180676350441 + ... + 2180676350486.

It is an arithmetic number, because the mean of its divisors is an integer number (26168116205568).

Almost surely, 2^{100311112121321} is an apocalyptic number.

It is an amenable number.

100311112121321 is a deficient number, since it is larger than the sum of its proper divisors (4361352700951).

100311112121321 is an equidigital number, since it uses as much as digits as its factorization.

100311112121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361352700950.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 100311112121321 its reverse (123121211113001), we get a palindrome (223432323234322).

The spelling of 100311112121321 in words is "one hundred trillion, three hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, three hundred twenty-one".