122173632221426 has 8 divisors (see below), whose sum is σ = 183804247883100. Its totient is φ = 60905549593728.

The previous prime is 122173632221383. The next prime is 122173632221429. The reversal of 122173632221426 is 624122236371221.

It can be written as a sum of positive squares in 2 ways, for example, as 107149101151225 + 15024531070201 = 10351285^2 + 3876149^2 .

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

It is a super-2 number, since 2×122173632221426² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122173632221429) 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, 90633257651 + ... + 90633258998.

Almost surely, 2^{122173632221426} is an apocalyptic number.

122173632221426 is a deficient number, since it is larger than the sum of its proper divisors (61630615661674).

122173632221426 is a wasteful number, since it uses less digits than its factorization.

122173632221426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181266516988.

The product of its digits is 580608, while the sum is 44.

Adding to 122173632221426 its reverse (624122236371221), we get a palindrome (746295868592647).

The spelling of 122173632221426 in words is "one hundred twenty-two trillion, one hundred seventy-three billion, six hundred thirty-two million, two hundred twenty-one thousand, four hundred twenty-six".