21404301120136 has 64 divisors (see below), whose sum is σ = 47158781644800. Its totient is φ = 9006017275200.

The previous prime is 21404301120133. The next prime is 21404301120151. The reversal of 21404301120136 is 63102110340412.

It is not an unprimeable number, because it can be changed into a prime (21404301120133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170505766 + ... + 170631253.

It is an arithmetic number, because the mean of its divisors is an integer number (736855963200).

Almost surely, 2^{21404301120136} is an apocalyptic number.

It is an amenable number.

21404301120136 is an abundant number, since it is smaller than the sum of its proper divisors (25754480524664).

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

21404301120136 is a wasteful number, since it uses less digits than its factorization.

21404301120136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341137090 (or 341137086 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 21404301120136 its reverse (63102110340412), we get a palindrome (84506411460548).

The spelling of 21404301120136 in words is "twenty-one trillion, four hundred four billion, three hundred one million, one hundred twenty thousand, one hundred thirty-six".