221655675411356 has 24 divisors (see below), whose sum is σ = 389874303979776. Its totient is φ = 110263039785920.

The previous prime is 221655675411353. The next prime is 221655675411389. The reversal of 221655675411356 is 653114576556122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221655675411295 and 221655675411304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221655675411353) 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, 36680810 + ... + 42294126.

It is an arithmetic number, because the mean of its divisors is an integer number (16244762665824).

Almost surely, 2^{221655675411356} is an apocalyptic number.

It is an amenable number.

221655675411356 is a deficient number, since it is larger than the sum of its proper divisors (168218628568420).

221655675411356 is a wasteful number, since it uses less digits than its factorization.

221655675411356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663629 (or 5663627 counting only the distinct ones).

The product of its digits is 45360000, while the sum is 59.

The spelling of 221655675411356 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, six hundred seventy-five million, four hundred eleven thousand, three hundred fifty-six".