21433111401 has 16 divisors (see below), whose sum is σ = 30792303360. Its totient is φ = 13182512640.

The previous prime is 21433111391. The next prime is 21433111477. The reversal of 21433111401 is 10411133412.

It is not a de Polignac number, because 21433111401 - 2¹⁴ = 21433095017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21433111001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73896 + ... + 219833.

It is an arithmetic number, because the mean of its divisors is an integer number (1924518960).

Almost surely, 2^21433111401 is an apocalyptic number.

It is an amenable number.

21433111401 is a deficient number, since it is larger than the sum of its proper divisors (9359191959).

21433111401 is a wasteful number, since it uses less digits than its factorization.

21433111401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295616.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21433111401 its reverse (10411133412), we get a palindrome (31844244813).

The spelling of 21433111401 in words is "twenty-one billion, four hundred thirty-three million, one hundred eleven thousand, four hundred one".