21103222332121 has 8 divisors (see below), whose sum is σ = 21751277882688. Its totient is φ = 20464911978000.

The previous prime is 21103222332103. The next prime is 21103222332133. The reversal of 21103222332121 is 12123322230112.

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 21103222332121 - 2¹⁷ = 21103222201049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103222332191) 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, 2436294715 + ... + 2436303376.

It is an arithmetic number, because the mean of its divisors is an integer number (2718909735336).

Almost surely, 2^{21103222332121} is an apocalyptic number.

It is an amenable number.

21103222332121 is a deficient number, since it is larger than the sum of its proper divisors (648055550567).

21103222332121 is an equidigital number, since it uses as much as digits as its factorization.

21103222332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872598223.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21103222332121 its reverse (12123322230112), we get a palindrome (33226544562233).

The spelling of 21103222332121 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-two million, three hundred thirty-two thousand, one hundred twenty-one".