21033202122 has 40 divisors (see below), whose sum is σ = 49610484000. Its totient is φ = 6642062856.

The previous prime is 21033202067. The next prime is 21033202129. The reversal of 21033202122 is 22120233012.

21033202122 is a `hidden beast` number, since 210 + 332 + 0 + 2 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21033202095 and 21033202104.

It is not an unprimeable number, because it can be changed into a prime (21033202129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3413622 + ... + 3419777.

It is an arithmetic number, because the mean of its divisors is an integer number (1240262100).

Almost surely, 2^21033202122 is an apocalyptic number.

21033202122 is an abundant number, since it is smaller than the sum of its proper divisors (28577281878).

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

21033202122 is a wasteful number, since it uses less digits than its factorization.

21033202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833432 (or 6833423 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21033202122 its reverse (22120233012), we get a palindrome (43153435134).

The spelling of 21033202122 in words is "twenty-one billion, thirty-three million, two hundred two thousand, one hundred twenty-two".