21362340201 has 16 divisors (see below), whose sum is σ = 28900126080. Its totient is φ = 14033277440.

The previous prime is 21362340193. The next prime is 21362340221. The reversal of 21362340201 is 10204326312.

It is a cyclic number.

It is not a de Polignac number, because 21362340201 - 2³ = 21362340193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21362340221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 375811 + ... + 428903.

It is an arithmetic number, because the mean of its divisors is an integer number (1806257880).

Almost surely, 2^21362340201 is an apocalyptic number.

It is an amenable number.

21362340201 is a deficient number, since it is larger than the sum of its proper divisors (7537785879).

21362340201 is a wasteful number, since it uses less digits than its factorization.

21362340201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55056.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21362340201 its reverse (10204326312), we get a palindrome (31566666513).

The spelling of 21362340201 in words is "twenty-one billion, three hundred sixty-two million, three hundred forty thousand, two hundred one".