21155144022614 has 16 divisors (see below), whose sum is σ = 36266058678528. Its totient is φ = 9066465921192.

The previous prime is 21155144022601. The next prime is 21155144022643. The reversal of 21155144022614 is 41622044155112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3974759 + ... + 7622925.

It is an arithmetic number, because the mean of its divisors is an integer number (2266628667408).

Almost surely, 2^{21155144022614} is an apocalyptic number.

21155144022614 is a deficient number, since it is larger than the sum of its proper divisors (15110914655914).

21155144022614 is a wasteful number, since it uses less digits than its factorization.

21155144022614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062379.

The product of its (nonzero) digits is 76800, while the sum is 38.

Adding to 21155144022614 its reverse (41622044155112), we get a palindrome (62777188177726).

The spelling of 21155144022614 in words is "twenty-one trillion, one hundred fifty-five billion, one hundred forty-four million, twenty-two thousand, six hundred fourteen".