21133154433044 has 6 divisors (see below), whose sum is σ = 36983020257834. Its totient is φ = 10566577216520.

The previous prime is 21133154433019. The next prime is 21133154433071. The reversal of 21133154433044 is 44033445133112.

It can be written as a sum of positive squares in only one way, i.e., 15941956736644 + 5191197696400 = 3992738^2 + 2278420^2 .

It is a super-2 number, since 2×21133154433044² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21133154432989 and 21133154433007.

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 as a sum of consecutive naturals, namely, 2641644304127 + ... + 2641644304134.

It is an arithmetic number, because the mean of its divisors is an integer number (6163836709639).

Almost surely, 2^{21133154433044} is an apocalyptic number.

It is an amenable number.

21133154433044 is a deficient number, since it is larger than the sum of its proper divisors (15849865824790).

21133154433044 is a wasteful number, since it uses less digits than its factorization.

21133154433044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5283288608265 (or 5283288608263 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 21133154433044 its reverse (44033445133112), we get a palindrome (65166599566156).

The spelling of 21133154433044 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred fifty-four million, four hundred thirty-three thousand, forty-four".