21014112431014 has 32 divisors (see below), whose sum is σ = 33803967108096. Its totient is φ = 9771840920160.

The previous prime is 21014112430937. The next prime is 21014112431021. The reversal of 21014112431014 is 41013421141012.

It is a self number, because there is not a number n which added to its sum of digits gives 21014112431014.

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, 1803522 + ... + 6729109.

It is an arithmetic number, because the mean of its divisors is an integer number (1056373972128).

Almost surely, 2^{21014112431014} is an apocalyptic number.

21014112431014 is a deficient number, since it is larger than the sum of its proper divisors (12789854677082).

21014112431014 is a wasteful number, since it uses less digits than its factorization.

21014112431014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534140.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 21014112431014 its reverse (41013421141012), we get a palindrome (62027533572026).

The spelling of 21014112431014 in words is "twenty-one trillion, fourteen billion, one hundred twelve million, four hundred thirty-one thousand, fourteen".