21331133122 has 8 divisors (see below), whose sum is σ = 34457984316. Its totient is φ = 9845138352.

The previous prime is 21331133081. The next prime is 21331133189. The reversal of 21331133122 is 22133113312.

It can be written as a sum of positive squares in 2 ways, for example, as 20480185881 + 850947241 = 143109^2 + 29171^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21331133093 and 21331133102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410214073 + ... + 410214124.

Almost surely, 2^21331133122 is an apocalyptic number.

21331133122 is a deficient number, since it is larger than the sum of its proper divisors (13126851194).

21331133122 is a wasteful number, since it uses less digits than its factorization.

21331133122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820428212.

The product of its digits is 648, while the sum is 22.

Adding to 21331133122 its reverse (22133113312), we get a palindrome (43464246434).

It can be divided in two parts, 2133113312 and 2, that multiplied together give a palindrome (4266226624).

The spelling of 21331133122 in words is "twenty-one billion, three hundred thirty-one million, one hundred thirty-three thousand, one hundred twenty-two".