21122103133133 has 4 divisors (see below), whose sum is σ = 21238799835708. Its totient is φ = 21005406430560.

The previous prime is 21122103133111. The next prime is 21122103133141. The reversal of 21122103133133 is 33133130122112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1074616269769 + 20047486863364 = 1036637^2 + 4477442^2 .

It is a cyclic number.

It is not a de Polignac number, because 21122103133133 - 2¹⁴ = 21122103116749 is a prime.

It is a super-2 number, since 2×21122103133133² (a number of 27 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 (21122103433133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58348351016 + ... + 58348351377.

It is an arithmetic number, because the mean of its divisors is an integer number (5309699958927).

Almost surely, 2^{21122103133133} is an apocalyptic number.

It is an amenable number.

21122103133133 is a deficient number, since it is larger than the sum of its proper divisors (116696702575).

21122103133133 is a wasteful number, since it uses less digits than its factorization.

21122103133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116696702574.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21122103133133 its reverse (33133130122112), we get a palindrome (54255233255245).

The spelling of 21122103133133 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred three million, one hundred thirty-three thousand, one hundred thirty-three".