14021214512155 has 4 divisors (see below), whose sum is σ = 16825457414592. Its totient is φ = 11216971609720.

The previous prime is 14021214512101. The next prime is 14021214512189. The reversal of 14021214512155 is 55121541212041.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-14021214512155 is a prime.

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 14021214512155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402121451211 + ... + 1402121451220.

It is an arithmetic number, because the mean of its divisors is an integer number (4206364353648).

Almost surely, 2^{14021214512155} is an apocalyptic number.

14021214512155 is a deficient number, since it is larger than the sum of its proper divisors (2804242902437).

14021214512155 is an equidigital number, since it uses as much as digits as its factorization.

14021214512155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804242902436.

The product of its (nonzero) digits is 16000, while the sum is 34.

Adding to 14021214512155 its reverse (55121541212041), we get a palindrome (69142755724196).

The spelling of 14021214512155 in words is "fourteen trillion, twenty-one billion, two hundred fourteen million, five hundred twelve thousand, one hundred fifty-five".