221440120001 has 8 divisors (see below), whose sum is σ = 221561180064. Its totient is φ = 221319099360.

The previous prime is 221440119997. The next prime is 221440120009. The reversal of 221440120001 is 100021044122.

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 221440120001 - 2² = 221440119997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221440120009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24701546 + ... + 24710508.

It is an arithmetic number, because the mean of its divisors is an integer number (27695147508).

Almost surely, 2^221440120001 is an apocalyptic number.

It is an amenable number.

221440120001 is a deficient number, since it is larger than the sum of its proper divisors (121060063).

221440120001 is an equidigital number, since it uses as much as digits as its factorization.

221440120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19711.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221440120001 its reverse (100021044122), we get a palindrome (321461164123).

The spelling of 221440120001 in words is "two hundred twenty-one billion, four hundred forty million, one hundred twenty thousand, one".