221657273332133 has 32 divisors (see below), whose sum is σ = 234432240215040. Its totient is φ = 209148674042880.

The previous prime is 221657273332129. The next prime is 221657273332139. The reversal of 221657273332133 is 331233372756122.

It is not a de Polignac number, because 221657273332133 - 2² = 221657273332129 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 (221657273332139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11986000235 + ... + 11986018727.

It is an arithmetic number, because the mean of its divisors is an integer number (7326007506720).

Almost surely, 2^{221657273332133} is an apocalyptic number.

221657273332133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221657273332133 is a deficient number, since it is larger than the sum of its proper divisors (12774966882907).

221657273332133 is a wasteful number, since it uses less digits than its factorization.

221657273332133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24149.

The product of its digits is 5715360, while the sum is 50.

The spelling of 221657273332133 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, two hundred seventy-three million, three hundred thirty-two thousand, one hundred thirty-three".