21122133182 has 4 divisors (see below), whose sum is σ = 31683199776. Its totient is φ = 10561066590.

The previous prime is 21122133181. The next prime is 21122133187. The reversal of 21122133182 is 28133122112.

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

It is a super-2 number, since 2×21122133182² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122133181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280533294 + ... + 5280533297.

It is an arithmetic number, because the mean of its divisors is an integer number (7920799944).

Almost surely, 2^21122133182 is an apocalyptic number.

21122133182 is a deficient number, since it is larger than the sum of its proper divisors (10561066594).

21122133182 is a wasteful number, since it uses less digits than its factorization.

21122133182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10561066593.

The product of its digits is 1152, while the sum is 26.

Adding to 21122133182 its reverse (28133122112), we get a palindrome (49255255294).

The spelling of 21122133182 in words is "twenty-one billion, one hundred twenty-two million, one hundred thirty-three thousand, one hundred eighty-two".