21213433301 has 8 divisors (see below), whose sum is σ = 22149569664. Its totient is φ = 20278448080.

The previous prime is 21213433249. The next prime is 21213433361. The reversal of 21213433301 is 10333431212.

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 21213433301 - 2⁶ = 21213433237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213433361) 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 7 ways as a sum of consecutive naturals, for example, 250010 + ... + 323931.

It is an arithmetic number, because the mean of its divisors is an integer number (2768696208).

Almost surely, 2^21213433301 is an apocalyptic number.

It is an amenable number.

21213433301 is a deficient number, since it is larger than the sum of its proper divisors (936136363).

21213433301 is a wasteful number, since it uses less digits than its factorization.

21213433301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575571.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21213433301 its reverse (10333431212), we get a palindrome (31546864513).

The spelling of 21213433301 in words is "twenty-one billion, two hundred thirteen million, four hundred thirty-three thousand, three hundred one".