21114143102431 has 16 divisors (see below), whose sum is σ = 21959449712640. Its totient is φ = 20279676987360.

The previous prime is 21114143102399. The next prime is 21114143102449. The reversal of 21114143102431 is 13420134141112.

It is a cyclic number.

It is not a de Polignac number, because 21114143102431 - 2⁵ = 21114143102399 is a prime.

It is a super-2 number, since 2×21114143102431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21114143102431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114143102491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2620485 + ... + 7006798.

It is an arithmetic number, because the mean of its divisors is an integer number (1372465607040).

Almost surely, 2^{21114143102431} is an apocalyptic number.

21114143102431 is a deficient number, since it is larger than the sum of its proper divisors (845306610209).

21114143102431 is a wasteful number, since it uses less digits than its factorization.

21114143102431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9627846.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 21114143102431 its reverse (13420134141112), we get a palindrome (34534277243543).

The spelling of 21114143102431 in words is "twenty-one trillion, one hundred fourteen billion, one hundred forty-three million, one hundred two thousand, four hundred thirty-one".