2121120100321 has 8 divisors (see below), whose sum is σ = 2172349764288. Its totient is φ = 2070421314000.

The previous prime is 2121120100289. The next prime is 2121120100327. The reversal of 2121120100321 is 1230010211212.

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 2121120100321 - 2⁵ = 2121120100289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121120100295 and 2121120100304.

It is not an unprimeable number, because it can be changed into a prime (2121120100327) 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, 132711325 + ... + 132727306.

It is an arithmetic number, because the mean of its divisors is an integer number (271543720536).

Almost surely, 2^{2121120100321} is an apocalyptic number.

It is an amenable number.

2121120100321 is a deficient number, since it is larger than the sum of its proper divisors (51229663967).

2121120100321 is a wasteful number, since it uses less digits than its factorization.

2121120100321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265438823.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2121120100321 its reverse (1230010211212), we get a palindrome (3351130311533).

The spelling of 2121120100321 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred thousand, three hundred twenty-one".