21000023332122 has 8 divisors (see below), whose sum is σ = 42000046664256. Its totient is φ = 7000007777372.

The previous prime is 21000023332117. The next prime is 21000023332151. The reversal of 21000023332122 is 22123332000012.

It is a happy number.

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

21000023332122 is an admirable number.

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, 1750001944338 + ... + 1750001944349.

It is an arithmetic number, because the mean of its divisors is an integer number (5250005833032).

Almost surely, 2^{21000023332122} is an apocalyptic number.

21000023332122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000023332122 is a wasteful number, since it uses less digits than its factorization.

21000023332122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500003888692.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21000023332122 its reverse (22123332000012), we get a palindrome (43123355332134).

The spelling of 21000023332122 in words is "twenty-one trillion, twenty-three million, three hundred thirty-two thousand, one hundred twenty-two".