21162536663101 has 4 divisors (see below), whose sum is σ = 21162546722304. Its totient is φ = 21162526603900.

The previous prime is 21162536663083. The next prime is 21162536663113. The reversal of 21162536663101 is 10136663526112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21162536663101 - 2⁴¹ = 18963513407549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21162536673101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535165 + ... + 6527746.

It is an arithmetic number, because the mean of its divisors is an integer number (5290636680576).

Almost surely, 2^{21162536663101} is an apocalyptic number.

It is an amenable number.

21162536663101 is a deficient number, since it is larger than the sum of its proper divisors (10059203).

21162536663101 is an equidigital number, since it uses as much as digits as its factorization.

21162536663101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10059202.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 21162536663101 in words is "twenty-one trillion, one hundred sixty-two billion, five hundred thirty-six million, six hundred sixty-three thousand, one hundred one".