21115333015134 has 16 divisors (see below), whose sum is σ = 44453332663680. Its totient is φ = 6667999899480.

The previous prime is 21115333015097. The next prime is 21115333015141. The reversal of 21115333015134 is 43151033351112.

It is a junction number, because it is equal to n+sod(n) for n = 21115333015095 and 21115333015104.

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, 92611109602 + ... + 92611109829.

It is an arithmetic number, because the mean of its divisors is an integer number (2778333291480).

Almost surely, 2^{21115333015134} is an apocalyptic number.

21115333015134 is an abundant number, since it is smaller than the sum of its proper divisors (23337999648546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21115333015134 is a wasteful number, since it uses less digits than its factorization.

21115333015134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185222219455.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 21115333015134 its reverse (43151033351112), we get a palindrome (64266366366246).

The spelling of 21115333015134 in words is "twenty-one trillion, one hundred fifteen billion, three hundred thirty-three million, fifteen thousand, one hundred thirty-four".