21311516441030 has 32 divisors (see below), whose sum is σ = 38476242638496. Its totient is φ = 8498939226624.

The previous prime is 21311516441023. The next prime is 21311516441063. The reversal of 21311516441030 is 3014461511312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84619652 + ... + 84871128.

It is an arithmetic number, because the mean of its divisors is an integer number (1202382582453).

Almost surely, 2^{21311516441030} is an apocalyptic number.

21311516441030 is a deficient number, since it is larger than the sum of its proper divisors (17164726197466).

21311516441030 is a wasteful number, since it uses less digits than its factorization.

21311516441030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276968.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 21311516441030 its reverse (3014461511312), we get a palindrome (24325977952342).

The spelling of 21311516441030 in words is "twenty-one trillion, three hundred eleven billion, five hundred sixteen million, four hundred forty-one thousand, thirty".