21233133102340 has 48 divisors (see below), whose sum is σ = 45000308651760. Its totient is φ = 8415024837120.

The previous prime is 21233133102319. The next prime is 21233133102403. The reversal of 21233133102340 is 4320133133212.

It can be written as a sum of positive squares in 8 ways, for example, as 3577068646596 + 17656064455744 = 1891314^2 + 4201912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21233133102299 and 21233133102308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64671634 + ... + 64999126.

It is an arithmetic number, because the mean of its divisors is an integer number (937506430245).

Almost surely, 2^{21233133102340} is an apocalyptic number.

21233133102340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233133102340 is an abundant number, since it is smaller than the sum of its proper divisors (23767175549420).

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

21233133102340 is a wasteful number, since it uses less digits than its factorization.

21233133102340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357352 (or 357350 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21233133102340 its reverse (4320133133212), we get a palindrome (25553266235552).

The spelling of 21233133102340 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred thirty-three million, one hundred two thousand, three hundred forty".