21033322002 has 80 divisors (see below), whose sum is σ = 58759791552. Its totient is φ = 5463197280.

The previous prime is 21033322001. The next prime is 21033322007. The reversal of 21033322002 is 20022333012.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21033322001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 830613 + ... + 855560.

Almost surely, 2^21033322002 is an apocalyptic number.

21033322002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21033322002 is an abundant number, since it is smaller than the sum of its proper divisors (37726469550).

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

21033322002 is a wasteful number, since it uses less digits than its factorization.

21033322002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686205 (or 1686196 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21033322002 its reverse (20022333012), we get a palindrome (41055655014).

The spelling of 21033322002 in words is "twenty-one billion, thirty-three million, three hundred twenty-two thousand, two".