21133232223430 has 16 divisors (see below), whose sum is σ = 38091015617184. Its totient is φ = 8441915641600.

The previous prime is 21133232223377. The next prime is 21133232223463. The reversal of 21133232223430 is 3432223233112.

21133232223430 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21133232223430² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21133232223392 and 21133232223401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422148171 + ... + 1422163030.

It is an arithmetic number, because the mean of its divisors is an integer number (2380688476074).

Almost surely, 2^{21133232223430} is an apocalyptic number.

21133232223430 is a deficient number, since it is larger than the sum of its proper divisors (16957783393754).

21133232223430 is a wasteful number, since it uses less digits than its factorization.

21133232223430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844311951.

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

Adding to 21133232223430 its reverse (3432223233112), we get a palindrome (24565455456542).

The spelling of 21133232223430 in words is "twenty-one trillion, one hundred thirty-three billion, two hundred thirty-two million, two hundred twenty-three thousand, four hundred thirty".