21012341514 has 16 divisors (see below), whose sum is σ = 43160485728. Its totient is φ = 6814813392.

The previous prime is 21012341507. The next prime is 21012341543. The reversal of 21012341514 is 41514321012.

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 7 ways as a sum of consecutive naturals, for example, 47324872 + ... + 47325315.

It is an arithmetic number, because the mean of its divisors is an integer number (2697530358).

Almost surely, 2^21012341514 is an apocalyptic number.

21012341514 is an abundant number, since it is smaller than the sum of its proper divisors (22148144214).

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

21012341514 is a wasteful number, since it uses less digits than its factorization.

21012341514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94650229.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 21012341514 its reverse (41514321012), we get a palindrome (62526662526).

It can be divided in two parts, 21012 and 341514, that added together give a triangular number (362526 = T₈₅₁).

The spelling of 21012341514 in words is "twenty-one billion, twelve million, three hundred forty-one thousand, five hundred fourteen".