21034154130 has 64 divisors (see below), whose sum is σ = 55085184000. Its totient is φ = 5097897920.

The previous prime is 21034154129. The next prime is 21034154171. The reversal of 21034154130 is 3145143012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21034154130.

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, 2272051 + ... + 2281289.

It is an arithmetic number, because the mean of its divisors is an integer number (860706000).

Almost surely, 2^21034154130 is an apocalyptic number.

21034154130 is an abundant number, since it is smaller than the sum of its proper divisors (34051029870).

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

21034154130 is a wasteful number, since it uses less digits than its factorization.

21034154130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16159.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21034154130 its reverse (3145143012), we get a palindrome (24179297142).

The spelling of 21034154130 in words is "twenty-one billion, thirty-four million, one hundred fifty-four thousand, one hundred thirty".