221021433101 has 32 divisors (see below), whose sum is σ = 267985428480. Its totient is φ = 178345238400.

The previous prime is 221021433077. The next prime is 221021433103. The reversal of 221021433101 is 101334120122.

It is not a de Polignac number, because 221021433101 - 2⁶ = 221021433037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021433103) 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, 842330 + ... + 1073108.

It is an arithmetic number, because the mean of its divisors is an integer number (8374544640).

Almost surely, 2^221021433101 is an apocalyptic number.

It is an amenable number.

221021433101 is a deficient number, since it is larger than the sum of its proper divisors (46963995379).

221021433101 is a wasteful number, since it uses less digits than its factorization.

221021433101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230945.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221021433101 its reverse (101334120122), we get a palindrome (322355553223).

The spelling of 221021433101 in words is "two hundred twenty-one billion, twenty-one million, four hundred thirty-three thousand, one hundred one".