21323133222340 has 24 divisors (see below), whose sum is σ = 45079107154200. Its totient is φ = 8472009977088.

The previous prime is 21323133222319. The next prime is 21323133222427. The reversal of 21323133222340 is 4322233132312.

It can be written as a sum of positive squares in 4 ways, for example, as 4724989079616 + 16598144142724 = 2173704^2 + 4074082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3577703937 + ... + 3577709896.

It is an arithmetic number, because the mean of its divisors is an integer number (1878296131425).

Almost surely, 2^{21323133222340} is an apocalyptic number.

21323133222340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323133222340 is an abundant number, since it is smaller than the sum of its proper divisors (23755973931860).

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

21323133222340 is a wasteful number, since it uses less digits than its factorization.

21323133222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7155413991 (or 7155413989 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 21323133222340 its reverse (4322233132312), we get a palindrome (25645366354652).

The spelling of 21323133222340 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred thirty-three million, two hundred twenty-two thousand, three hundred forty".