21122011322103 has 8 divisors (see below), whose sum is σ = 28288971816448. Its totient is φ = 14018195854584.

The previous prime is 21122011322081. The next prime is 21122011322149. The reversal of 21122011322103 is 30122311022112.

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

It is not a de Polignac number, because 21122011322103 - 2¹⁰ = 21122011321079 is a prime.

It is a super-2 number, since 2×21122011322103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21122011322103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122011322173) 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, 15786255925 + ... + 15786257262.

It is an arithmetic number, because the mean of its divisors is an integer number (3536121477056).

Almost surely, 2^{21122011322103} is an apocalyptic number.

21122011322103 is a deficient number, since it is larger than the sum of its proper divisors (7166960494345).

21122011322103 is a wasteful number, since it uses less digits than its factorization.

21122011322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31572513413.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21122011322103 its reverse (30122311022112), we get a palindrome (51244322344215).

The spelling of 21122011322103 in words is "twenty-one trillion, one hundred twenty-two billion, eleven million, three hundred twenty-two thousand, one hundred three".