221636711435253 has 8 divisors (see below), whose sum is σ = 295555075233600. Its totient is φ = 147738077630208.

The previous prime is 221636711435221. The next prime is 221636711435333. The reversal of 221636711435253 is 352534117636122.

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

It is not a de Polignac number, because 221636711435253 - 2⁵ = 221636711435221 is a prime.

It is a super-2 number, since 2×221636711435253² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221636711435196 and 221636711435205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221636711435453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4932472113 + ... + 4932517046.

It is an arithmetic number, because the mean of its divisors is an integer number (36944384404200).

Almost surely, 2^{221636711435253} is an apocalyptic number.

It is an amenable number.

221636711435253 is a deficient number, since it is larger than the sum of its proper divisors (73918363798347).

221636711435253 is an equidigital number, since it uses as much as digits as its factorization.

221636711435253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9864996651.

The product of its digits is 5443200, while the sum is 51.

The spelling of 221636711435253 in words is "two hundred twenty-one trillion, six hundred thirty-six billion, seven hundred eleven million, four hundred thirty-five thousand, two hundred fifty-three".