221614653353 has 4 divisors (see below), whose sum is σ = 231250073088. Its totient is φ = 211979233620.

The previous prime is 221614653349. The next prime is 221614653419. The reversal of 221614653353 is 353356416122.

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.

It is a cyclic number.

It is not a de Polignac number, because 221614653353 - 2² = 221614653349 is a prime.

It is a super-2 number, since 2×221614653353² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221614653353.

It is not an unprimeable number, because it can be changed into a prime (221614653553) 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, 4817709833 + ... + 4817709878.

It is an arithmetic number, because the mean of its divisors is an integer number (57812518272).

Almost surely, 2^221614653353 is an apocalyptic number.

221614653353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221614653353 is a deficient number, since it is larger than the sum of its proper divisors (9635419735).

221614653353 is an equidigital number, since it uses as much as digits as its factorization.

221614653353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635419734.

The product of its digits is 388800, while the sum is 41.

The spelling of 221614653353 in words is "two hundred twenty-one billion, six hundred fourteen million, six hundred fifty-three thousand, three hundred fifty-three".