21342215035 has 4 divisors (see below), whose sum is σ = 25610658048. Its totient is φ = 17073772024.

The previous prime is 21342214991. The next prime is 21342215047. The reversal of 21342215035 is 53051224312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21342215035 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21342214994 and 21342215012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134221499 + ... + 2134221508.

It is an arithmetic number, because the mean of its divisors is an integer number (6402664512).

Almost surely, 2^21342215035 is an apocalyptic number.

21342215035 is a deficient number, since it is larger than the sum of its proper divisors (4268443013).

21342215035 is an equidigital number, since it uses as much as digits as its factorization.

21342215035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268443012.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 21342215035 its reverse (53051224312), we get a palindrome (74393439347).

The spelling of 21342215035 in words is "twenty-one billion, three hundred forty-two million, two hundred fifteen thousand, thirty-five".