21123033301 has 8 divisors (see below), whose sum is σ = 21859357184. Its totient is φ = 20390142960.

The previous prime is 21123033293. The next prime is 21123033313. The reversal of 21123033301 is 10333032112.

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 21123033301 - 2³ = 21123033293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123033101) 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, 845865 + ... + 870478.

It is an arithmetic number, because the mean of its divisors is an integer number (2732419648).

Almost surely, 2^21123033301 is an apocalyptic number.

It is an amenable number.

21123033301 is a deficient number, since it is larger than the sum of its proper divisors (736323883).

21123033301 is a wasteful number, since it uses less digits than its factorization.

21123033301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716771.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21123033301 its reverse (10333032112), we get a palindrome (31456065413).

The spelling of 21123033301 in words is "twenty-one billion, one hundred twenty-three million, thirty-three thousand, three hundred one".