21341141215 has 16 divisors (see below), whose sum is σ = 26734007808. Its totient is φ = 16323775776.

The previous prime is 21341141207. The next prime is 21341141243. The reversal of 21341141215 is 51214114312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21341141215 - 2³ = 21341141207 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 21341141215.

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, 246094 + ... + 321316.

It is an arithmetic number, because the mean of its divisors is an integer number (1670875488).

Almost surely, 2^21341141215 is an apocalyptic number.

21341141215 is a deficient number, since it is larger than the sum of its proper divisors (5392866593).

21341141215 is a wasteful number, since it uses less digits than its factorization.

21341141215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77718.

The product of its digits is 960, while the sum is 25.

Adding to 21341141215 its reverse (51214114312), we get a palindrome (72555255527).

The spelling of 21341141215 in words is "twenty-one billion, three hundred forty-one million, one hundred forty-one thousand, two hundred fifteen".