21403200233224 has 16 divisors (see below), whose sum is σ = 40614506467920. Its totient is φ = 10572665175120.

The previous prime is 21403200233161. The next prime is 21403200233263. The reversal of 21403200233224 is 42233200230412.

It is a super-4 number, since 4×21403200233224⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21403200233192 and 21403200233201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16116866982 + ... + 16116868309.

It is an arithmetic number, because the mean of its divisors is an integer number (2538406654245).

Almost surely, 2^{21403200233224} is an apocalyptic number.

It is an amenable number.

21403200233224 is a deficient number, since it is larger than the sum of its proper divisors (19211306234696).

21403200233224 is a wasteful number, since it uses less digits than its factorization.

21403200233224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32233735380 (or 32233735376 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21403200233224 its reverse (42233200230412), we get a palindrome (63636400463636).

The spelling of 21403200233224 in words is "twenty-one trillion, four hundred three billion, two hundred million, two hundred thirty-three thousand, two hundred twenty-four".