21115402130132 has 48 divisors (see below), whose sum is σ = 37891167914880. Its totient is φ = 10289874739200.

The previous prime is 21115402130111. The next prime is 21115402130197. The reversal of 21115402130132 is 23103120451112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1004575919 + ... + 1004596937.

It is an arithmetic number, because the mean of its divisors is an integer number (789399331560).

Almost surely, 2^{21115402130132} is an apocalyptic number.

It is an amenable number.

21115402130132 is a deficient number, since it is larger than the sum of its proper divisors (16775765784748).

21115402130132 is a wasteful number, since it uses less digits than its factorization.

21115402130132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26912 (or 26910 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 21115402130132 its reverse (23103120451112), we get a palindrome (44218522581244).

The spelling of 21115402130132 in words is "twenty-one trillion, one hundred fifteen billion, four hundred two million, one hundred thirty thousand, one hundred thirty-two".