21212331322103 has 8 divisors (see below), whose sum is σ = 22328849609520. Its totient is φ = 20095821014400.

The previous prime is 21212331322073. The next prime is 21212331322109. The reversal of 21212331322103 is 30122313321212.

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 21212331322103 - 2³² = 21208036354807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212331322109) 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, 3909701 + ... + 7596737.

It is an arithmetic number, because the mean of its divisors is an integer number (2791106201190).

Almost surely, 2^{21212331322103} is an apocalyptic number.

21212331322103 is a deficient number, since it is larger than the sum of its proper divisors (1116518287417).

21212331322103 is a wasteful number, since it uses less digits than its factorization.

21212331322103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989857.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21212331322103 its reverse (30122313321212), we get a palindrome (51334644643315).

The spelling of 21212331322103 in words is "twenty-one trillion, two hundred twelve billion, three hundred thirty-one million, three hundred twenty-two thousand, one hundred three".