221321032123133 has 32 divisors (see below), whose sum is σ = 232812315590400. Its totient is φ = 209994263835136.

The previous prime is 221321032123111. The next prime is 221321032123151. The reversal of 221321032123133 is 331321230123122.

It is a cyclic number.

It is not a de Polignac number, because 221321032123133 - 2¹⁶ = 221321032057597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221321032123096 and 221321032123105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221321032123153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1354914641 + ... + 1355077977.

It is an arithmetic number, because the mean of its divisors is an integer number (7275384862200).

Almost surely, 2^{221321032123133} is an apocalyptic number.

221321032123133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221321032123133 is a deficient number, since it is larger than the sum of its proper divisors (11491283467267).

221321032123133 is a wasteful number, since it uses less digits than its factorization.

221321032123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164581.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 221321032123133 its reverse (331321230123122), we get a palindrome (552642262246255).

The spelling of 221321032123133 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, thirty-two million, one hundred twenty-three thousand, one hundred thirty-three".