21143323014 has 32 divisors (see below), whose sum is σ = 46187193600. Its totient is φ = 6399247200.

The previous prime is 21143323007. The next prime is 21143323021. The reversal of 21143323014 is 41032334112.

It is a happy number.

21143323014 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (21143323007) and next prime (21143323021).

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, 140914 + ... + 249285.

It is an arithmetic number, because the mean of its divisors is an integer number (1443349800).

Almost surely, 2^21143323014 is an apocalyptic number.

21143323014 is an abundant number, since it is smaller than the sum of its proper divisors (25043870586).

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

21143323014 is a wasteful number, since it uses less digits than its factorization.

21143323014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391036.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21143323014 its reverse (41032334112), we get a palindrome (62175657126).

The spelling of 21143323014 in words is "twenty-one billion, one hundred forty-three million, three hundred twenty-three thousand, fourteen".