21301132333 has 16 divisors (see below), whose sum is σ = 23553711216. Its totient is φ = 19138498560.

The previous prime is 21301132297. The next prime is 21301132337. The reversal of 21301132333 is 33323110312.

It can be written as a sum of positive squares in 8 ways, for example, as 13989685284 + 7311447049 = 118278^2 + 85507^2 .

It is a cyclic number.

It is not a de Polignac number, because 21301132333 - 2¹⁷ = 21301001261 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 (21301132337) 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, 184641 + ... + 276937.

It is an arithmetic number, because the mean of its divisors is an integer number (1472106951).

Almost surely, 2^21301132333 is an apocalyptic number.

It is an amenable number.

21301132333 is a deficient number, since it is larger than the sum of its proper divisors (2252578883).

21301132333 is a wasteful number, since it uses less digits than its factorization.

21301132333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92784.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21301132333 its reverse (33323110312), we get a palindrome (54624242645).

The spelling of 21301132333 in words is "twenty-one billion, three hundred one million, one hundred thirty-two thousand, three hundred thirty-three".