21433124201 has 8 divisors (see below), whose sum is σ = 21558385800. Its totient is φ = 21308009472.

The previous prime is 21433124197. The next prime is 21433124213. The reversal of 21433124201 is 10242133412.

It can be written as a sum of positive squares in 4 ways, for example, as 1628176 + 21431496025 = 1276^2 + 146395^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21433124201 - 2² = 21433124197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21433124261) 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, 263111 + ... + 334803.

It is an arithmetic number, because the mean of its divisors is an integer number (2694798225).

Almost surely, 2^21433124201 is an apocalyptic number.

It is an amenable number.

21433124201 is a deficient number, since it is larger than the sum of its proper divisors (125261599).

21433124201 is a wasteful number, since it uses less digits than its factorization.

21433124201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73435.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21433124201 its reverse (10242133412), we get a palindrome (31675257613).

The spelling of 21433124201 in words is "twenty-one billion, four hundred thirty-three million, one hundred twenty-four thousand, two hundred one".