221234033001 has 4 divisors (see below), whose sum is σ = 294978710672. Its totient is φ = 147489355332.

The previous prime is 221234032997. The next prime is 221234033003. The reversal of 221234033001 is 100330432122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 221234033001 - 2² = 221234032997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221234033003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36872338831 + ... + 36872338836.

It is an arithmetic number, because the mean of its divisors is an integer number (73744677668).

Almost surely, 2^221234033001 is an apocalyptic number.

It is an amenable number.

221234033001 is a deficient number, since it is larger than the sum of its proper divisors (73744677671).

221234033001 is an equidigital number, since it uses as much as digits as its factorization.

221234033001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73744677670.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221234033001 its reverse (100330432122), we get a palindrome (321564465123).

The spelling of 221234033001 in words is "two hundred twenty-one billion, two hundred thirty-four million, thirty-three thousand, one".