21476321124 has 24 divisors (see below), whose sum is σ = 50136565248. Its totient is φ = 7155180960.

The previous prime is 21476321123. The next prime is 21476321161. The reversal of 21476321124 is 42112367412.

It is a super-2 number, since 2×21476321124² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21476321123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424132 + ... + 472059.

It is an arithmetic number, because the mean of its divisors is an integer number (2089023552).

Almost surely, 2^21476321124 is an apocalyptic number.

It is an amenable number.

21476321124 is an abundant number, since it is smaller than the sum of its proper divisors (28660244124).

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

21476321124 is a wasteful number, since it uses less digits than its factorization.

21476321124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898195 (or 898193 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

Adding to 21476321124 its reverse (42112367412), we get a palindrome (63588688536).

The spelling of 21476321124 in words is "twenty-one billion, four hundred seventy-six million, three hundred twenty-one thousand, one hundred twenty-four".