221012100233 has 8 divisors (see below), whose sum is σ = 223471847808. Its totient is φ = 218564621344.

The previous prime is 221012100203. The next prime is 221012100247. The reversal of 221012100233 is 332001210122.

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

It is a cyclic number.

It is not a de Polignac number, because 221012100233 - 2²² = 221007905929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012100203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030941 + ... + 3103002.

It is an arithmetic number, because the mean of its divisors is an integer number (27933980976).

Almost surely, 2^221012100233 is an apocalyptic number.

It is an amenable number.

221012100233 is a deficient number, since it is larger than the sum of its proper divisors (2459747575).

221012100233 is a wasteful number, since it uses less digits than its factorization.

221012100233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134343.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221012100233 its reverse (332001210122), we get a palindrome (553013310355).

The spelling of 221012100233 in words is "two hundred twenty-one billion, twelve million, one hundred thousand, two hundred thirty-three".