42213122131225 has 6 divisors (see below), whose sum is σ = 52344271442750. Its totient is φ = 33770497704960.

The previous prime is 42213122131223. The next prime is 42213122131249. The reversal of 42213122131225 is 52213122131224.

It can be written as a sum of positive squares in 3 ways, for example, as 12716448716169 + 29496673415056 = 3566013^2 + 5431084^2 .

It is not a de Polignac number, because 42213122131225 - 2¹ = 42213122131223 is a prime.

It is a super-2 number, since 2×42213122131225² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42213122131223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844262442600 + ... + 844262442649.

Almost surely, 2^{42213122131225} is an apocalyptic number.

It is an amenable number.

42213122131225 is a deficient number, since it is larger than the sum of its proper divisors (10131149311525).

42213122131225 is a wasteful number, since it uses less digits than its factorization.

42213122131225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688524885259 (or 1688524885254 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

Adding to 42213122131225 its reverse (52213122131224), we get a palindrome (94426244262449).

Subtracting 42213122131225 from its reverse (52213122131224), we obtain a palindrome (9999999999999).

The spelling of 42213122131225 in words is "forty-two trillion, two hundred thirteen billion, one hundred twenty-two million, one hundred thirty-one thousand, two hundred twenty-five".