21011232033204 has 96 divisors (see below), whose sum is σ = 56153621422080. Its totient is φ = 5989964110848.

The previous prime is 21011232033199. The next prime is 21011232033223. The reversal of 21011232033204 is 40233023211012.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 202039332 + ... + 202143300.

It is an arithmetic number, because the mean of its divisors is an integer number (584933556480).

Almost surely, 2^{21011232033204} is an apocalyptic number.

It is an amenable number.

21011232033204 is an abundant number, since it is smaller than the sum of its proper divisors (35142389388876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21011232033204 is a wasteful number, since it uses less digits than its factorization.

21011232033204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109269 (or 109267 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21011232033204 its reverse (40233023211012), we get a palindrome (61244255244216).

The spelling of 21011232033204 in words is "twenty-one trillion, eleven billion, two hundred thirty-two million, thirty-three thousand, two hundred four".