21323102202 has 64 divisors (see below), whose sum is σ = 47970144000. Its totient is φ = 7020059904.

The previous prime is 21323102197. The next prime is 21323102231. The reversal of 21323102202 is 20220132312.

21323102202 is a `hidden beast` number, since 2 + 132 + 310 + 220 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5731699 + ... + 5735417.

It is an arithmetic number, because the mean of its divisors is an integer number (749533500).

Almost surely, 2^21323102202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21323102202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23985072000).

21323102202 is an abundant number, since it is smaller than the sum of its proper divisors (26647041798).

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

21323102202 is a wasteful number, since it uses less digits than its factorization.

21323102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012 (or 5006 counting only the distinct ones).

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

Adding to 21323102202 its reverse (20220132312), we get a palindrome (41543234514).

The spelling of 21323102202 in words is "twenty-one billion, three hundred twenty-three million, one hundred two thousand, two hundred two".