2121201032321 has 8 divisors (see below), whose sum is σ = 2566831501440. Its totient is φ = 1711221000768.

The previous prime is 2121201032317. The next prime is 2121201032333. The reversal of 2121201032321 is 1232301021212.

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 2121201032321 - 2² = 2121201032317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121201032293 and 2121201032302.

It is not an unprimeable number, because it can be changed into a prime (2121201032351) 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, 8912609261 + ... + 8912609498.

It is an arithmetic number, because the mean of its divisors is an integer number (320853937680).

Almost surely, 2^{2121201032321} is an apocalyptic number.

It is an amenable number.

2121201032321 is a deficient number, since it is larger than the sum of its proper divisors (445630469119).

2121201032321 is a wasteful number, since it uses less digits than its factorization.

2121201032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17825218783.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121201032321 its reverse (1232301021212), we get a palindrome (3353502053533).

The spelling of 2121201032321 in words is "two trillion, one hundred twenty-one billion, two hundred one million, thirty-two thousand, three hundred twenty-one".