21346053202 has 4 divisors (see below), whose sum is σ = 32019079806. Its totient is φ = 10673026600.

The previous prime is 21346053167. The next prime is 21346053221. The reversal of 21346053202 is 20235064312.

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

It can be written as a sum of positive squares in only one way, i.e., 21115286721 + 230766481 = 145311^2 + 15191^2 .

It is a super-2 number, since 2×21346053202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5336513299 + ... + 5336513302.

Almost surely, 2^21346053202 is an apocalyptic number.

21346053202 is a deficient number, since it is larger than the sum of its proper divisors (10673026604).

21346053202 is a wasteful number, since it uses less digits than its factorization.

21346053202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673026603.

The product of its (nonzero) digits is 8640, while the sum is 28.

It can be divided in two parts, 213460 and 53202, that added together give a palindrome (266662).

The spelling of 21346053202 in words is "twenty-one billion, three hundred forty-six million, fifty-three thousand, two hundred two".