221120203001 has 4 divisors (see below), whose sum is σ = 222231360000. Its totient is φ = 220009046004.

The previous prime is 221120202959. The next prime is 221120203013. The reversal of 221120203001 is 100302021122.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221120203001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120203501) 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, 555578201 + ... + 555578598.

It is an arithmetic number, because the mean of its divisors is an integer number (55557840000).

Almost surely, 2^221120203001 is an apocalyptic number.

It is an amenable number.

221120203001 is a deficient number, since it is larger than the sum of its proper divisors (1111156999).

221120203001 is a wasteful number, since it uses less digits than its factorization.

221120203001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111156998.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221120203001 its reverse (100302021122), we get a palindrome (321422224123).

The spelling of 221120203001 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred three thousand, one".