21232123120103 has 8 divisors (see below), whose sum is σ = 24265320163872. Its totient is φ = 18198935225856.

The previous prime is 21232123120081. The next prime is 21232123120141. The reversal of 21232123120103 is 30102132123212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21232123120103 - 2¹² = 21232123116007 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 (21232123120183) 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, 3746351 + ... + 7516607.

It is an arithmetic number, because the mean of its divisors is an integer number (3033165020484).

Almost surely, 2^{21232123120103} is an apocalyptic number.

21232123120103 is a deficient number, since it is larger than the sum of its proper divisors (3033197043769).

21232123120103 is an equidigital number, since it uses as much as digits as its factorization.

21232123120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574761.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21232123120103 its reverse (30102132123212), we get a palindrome (51334255243315).

The spelling of 21232123120103 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred twenty-three million, one hundred twenty thousand, one hundred three".