21224032503846 has 8 divisors (see below), whose sum is σ = 42448065007704. Its totient is φ = 7074677501280.

The previous prime is 21224032503809. The next prime is 21224032503847. The reversal of 21224032503846 is 64830523042212.

It is a happy number.

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

21224032503846 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21224032503798 and 21224032503807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21224032503847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768669375315 + ... + 1768669375326.

It is an arithmetic number, because the mean of its divisors is an integer number (5306008125963).

Almost surely, 2^{21224032503846} is an apocalyptic number.

21224032503846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21224032503846 is a wasteful number, since it uses less digits than its factorization.

21224032503846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537338750646.

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 21224032503846 in words is "twenty-one trillion, two hundred twenty-four billion, thirty-two million, five hundred three thousand, eight hundred forty-six".