21144013119 has 20 divisors (see below), whose sum is σ = 31774656144. Its totient is φ = 14011592544.

The previous prime is 21144013103. The next prime is 21144013139. The reversal of 21144013119 is 91131044112.

21144013119 is a `hidden beast` number, since 211 + 4 + 401 + 31 + 19 = 666.

It is not a de Polignac number, because 21144013119 - 2⁴ = 21144013103 is a prime.

It is a super-2 number, since 2×21144013119² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21144013092 and 21144013101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21144013139) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 768022 + ... + 795075.

Almost surely, 2^21144013119 is an apocalyptic number.

21144013119 is a deficient number, since it is larger than the sum of its proper divisors (10630643025).

21144013119 is a wasteful number, since it uses less digits than its factorization.

21144013119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563276 (or 1563267 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 21144013119 in words is "twenty-one billion, one hundred forty-four million, thirteen thousand, one hundred nineteen".