21500001341242 has 8 divisors (see below), whose sum is σ = 32612361585300. Its totient is φ = 10629214146144.

The previous prime is 21500001341201. The next prime is 21500001341261. The reversal of 21500001341242 is 24214310000512.

It can be written as a sum of positive squares in 2 ways, for example, as 17199939692961 + 4300061648281 = 4147281^2 + 2073659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 60393262017 + ... + 60393262372.

Almost surely, 2^{21500001341242} is an apocalyptic number.

21500001341242 is a deficient number, since it is larger than the sum of its proper divisors (11112360244058).

21500001341242 is a wasteful number, since it uses less digits than its factorization.

21500001341242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120786524480.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21500001341242 its reverse (24214310000512), we get a palindrome (45714311341754).

The spelling of 21500001341242 in words is "twenty-one trillion, five hundred billion, one million, three hundred forty-one thousand, two hundred forty-two".