21133133220033 has 16 divisors (see below), whose sum is σ = 31308569151360. Its totient is φ = 14088654841968.

The previous prime is 21133133220029. The next prime is 21133133220037. The reversal of 21133133220033 is 33002233133112.

21133133220033 is a `hidden beast` number, since 2 + 1 + 1 + 331 + 3 + 322 + 0 + 0 + 3 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (21133133220029) and next prime (21133133220037).

It is not a de Polignac number, because 21133133220033 - 2² = 21133133220029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21133133219979 and 21133133220006.

It is not an unprimeable number, because it can be changed into a prime (21133133220037) 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, 1155891 + ... + 6603207.

It is an arithmetic number, because the mean of its divisors is an integer number (1956785571960).

Almost surely, 2^{21133133220033} is an apocalyptic number.

It is an amenable number.

21133133220033 is a deficient number, since it is larger than the sum of its proper divisors (10175435931327).

21133133220033 is a wasteful number, since it uses less digits than its factorization.

21133133220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591013 (or 5591007 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21133133220033 its reverse (33002233133112), we get a palindrome (54135366353145).

The spelling of 21133133220033 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred thirty-three million, two hundred twenty thousand, thirty-three".