21103312233211 has 6 divisors (see below), whose sum is σ = 22851515613660. Its totient is φ = 19479980522808.

The previous prime is 21103312233209. The next prime is 21103312233233. The reversal of 21103312233211 is 11233221330112.

It is not a de Polignac number, because 21103312233211 - 2¹ = 21103312233209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103312233251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62435834841 + ... + 62435835178.

It is an arithmetic number, because the mean of its divisors is an integer number (3808585935610).

Almost surely, 2^{21103312233211} is an apocalyptic number.

21103312233211 is a deficient number, since it is larger than the sum of its proper divisors (1748203380449).

21103312233211 is a wasteful number, since it uses less digits than its factorization.

21103312233211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124871670045 (or 124871670032 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21103312233211 its reverse (11233221330112), we get a palindrome (32336533563323).

The spelling of 21103312233211 in words is "twenty-one trillion, one hundred three billion, three hundred twelve million, two hundred thirty-three thousand, two hundred eleven".