21122103103 has 8 divisors (see below), whose sum is σ = 22706853120. Its totient is φ = 19584659160.

The previous prime is 21122103029. The next prime is 21122103109. The reversal of 21122103103 is 30130122112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21122103103 is a prime.

It is a super-2 number, since 2×21122103103² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122103109) 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, 11825593 + ... + 11827378.

It is an arithmetic number, because the mean of its divisors is an integer number (2838356640).

Almost surely, 2^21122103103 is an apocalyptic number.

21122103103 is a deficient number, since it is larger than the sum of its proper divisors (1584750017).

21122103103 is a wasteful number, since it uses less digits than its factorization.

21122103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23653037.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21122103103 its reverse (30130122112), we get a palindrome (51252225215).

The spelling of 21122103103 in words is "twenty-one billion, one hundred twenty-two million, one hundred three thousand, one hundred three".