21124120304433 has 16 divisors (see below), whose sum is σ = 28820672052480. Its totient is φ = 13755161504784.

The previous prime is 21124120304423. The next prime is 21124120304449. The reversal of 21124120304433 is 33440302142112.

It is not a de Polignac number, because 21124120304433 - 2¹⁴ = 21124120288049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21124120304433.

It is not an unprimeable number, because it can be changed into a prime (21124120304423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28950910 + ... + 29671592.

It is an arithmetic number, because the mean of its divisors is an integer number (1801292003280).

Almost surely, 2^{21124120304433} is an apocalyptic number.

It is an amenable number.

21124120304433 is a deficient number, since it is larger than the sum of its proper divisors (7696551748047).

21124120304433 is a wasteful number, since it uses less digits than its factorization.

21124120304433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947948.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21124120304433 its reverse (33440302142112), we get a palindrome (54564422446545).

The spelling of 21124120304433 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred twenty million, three hundred four thousand, four hundred thirty-three".