21040222302 has 96 divisors (see below), whose sum is σ = 52039203840. Its totient is φ = 6081514560.

The previous prime is 21040222271. The next prime is 21040222321. The reversal of 21040222302 is 20322204012.

21040222302 is a `hidden beast` number, since 210 + 402 + 22 + 30 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1665024 + ... + 1677612.

It is an arithmetic number, because the mean of its divisors is an integer number (542075040).

Almost surely, 2^21040222302 is an apocalyptic number.

21040222302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21040222302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26019601920).

21040222302 is an abundant number, since it is smaller than the sum of its proper divisors (30998981538).

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

21040222302 is a wasteful number, since it uses less digits than its factorization.

21040222302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998 (or 12995 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21040222302 its reverse (20322204012), we get a palindrome (41362426314).

It can be divided in two parts, 21040 and 222302, that added together give a palindrome (243342).

The spelling of 21040222302 in words is "twenty-one billion, forty million, two hundred twenty-two thousand, three hundred two".