21012233321122 has 8 divisors (see below), whose sum is σ = 32113035830556. Its totient is φ = 10307888044272.

The previous prime is 21012233321113. The next prime is 21012233321143. The reversal of 21012233321122 is 22112333221012.

It can be written as a sum of positive squares in 2 ways, for example, as 20867345750241 + 144887570881 = 4568079^2 + 380641^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99114308013 + ... + 99114308224.

Almost surely, 2^{21012233321122} is an apocalyptic number.

21012233321122 is a deficient number, since it is larger than the sum of its proper divisors (11100802509434).

21012233321122 is a wasteful number, since it uses less digits than its factorization.

21012233321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198228616292.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21012233321122 its reverse (22112333221012), we get a palindrome (43124566542134).

The spelling of 21012233321122 in words is "twenty-one trillion, twelve billion, two hundred thirty-three million, three hundred twenty-one thousand, one hundred twenty-two".