21222534351302 has 24 divisors (see below), whose sum is σ = 33837315740184. Its totient is φ = 9980936209152.

The previous prime is 21222534351253. The next prime is 21222534351367. The reversal of 21222534351302 is 20315343522212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10343303 + ... + 12224114.

It is an arithmetic number, because the mean of its divisors is an integer number (1409888155841).

Almost surely, 2^{21222534351302} is an apocalyptic number.

21222534351302 is a deficient number, since it is larger than the sum of its proper divisors (12614781388882).

21222534351302 is a wasteful number, since it uses less digits than its factorization.

21222534351302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22569080 (or 22569063 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 21222534351302 its reverse (20315343522212), we get a palindrome (41537877873514).

The spelling of 21222534351302 in words is "twenty-one trillion, two hundred twenty-two billion, five hundred thirty-four million, three hundred fifty-one thousand, three hundred two".