21122103013 has 16 divisors (see below), whose sum is σ = 23801930496. Its totient is φ = 18574885440.

The previous prime is 21122103007. The next prime is 21122103017. The reversal of 21122103013 is 31030122112.

It is a de Polignac number, because none of the positive numbers 2^k-21122103013 is a prime.

It is a super-2 number, since 2×21122103013² (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 (21122103017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79581 + ... + 220402.

It is an arithmetic number, because the mean of its divisors is an integer number (1487620656).

Almost surely, 2^21122103013 is an apocalyptic number.

It is an amenable number.

21122103013 is a deficient number, since it is larger than the sum of its proper divisors (2679827483).

21122103013 is a wasteful number, since it uses less digits than its factorization.

21122103013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300204.

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

Adding to 21122103013 its reverse (31030122112), we get a palindrome (52152225125).

The spelling of 21122103013 in words is "twenty-one billion, one hundred twenty-two million, one hundred three thousand, thirteen".