21213101133043 has 8 divisors (see below), whose sum is σ = 21946154039280. Its totient is φ = 20480152670880.

The previous prime is 21213101132969. The next prime is 21213101133071. The reversal of 21213101133043 is 34033110131212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21213101133043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21213101132999 and 21213101133017.

It is not an unprimeable number, because it can be changed into a prime (21213101133143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25697680 + ... + 26510317.

It is an arithmetic number, because the mean of its divisors is an integer number (2743269254910).

Almost surely, 2^{21213101133043} is an apocalyptic number.

21213101133043 is a deficient number, since it is larger than the sum of its proper divisors (733052906237).

21213101133043 is a wasteful number, since it uses less digits than its factorization.

21213101133043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52222037.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21213101133043 its reverse (34033110131212), we get a palindrome (55246211264255).

The spelling of 21213101133043 in words is "twenty-one trillion, two hundred thirteen billion, one hundred one million, one hundred thirty-three thousand, forty-three".