221401102001 has 8 divisors (see below), whose sum is σ = 233059332000. Its totient is φ = 209743426080.

The previous prime is 221401101989. The next prime is 221401102007. The reversal of 221401102001 is 100201104122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221401102001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221401102007) 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, 870050 + ... + 1095348.

It is an arithmetic number, because the mean of its divisors is an integer number (29132416500).

Almost surely, 2^221401102001 is an apocalyptic number.

It is an amenable number.

221401102001 is a deficient number, since it is larger than the sum of its proper divisors (11658229999).

221401102001 is a wasteful number, since it uses less digits than its factorization.

221401102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277039.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221401102001 its reverse (100201104122), we get a palindrome (321602206123).

The spelling of 221401102001 in words is "two hundred twenty-one billion, four hundred one million, one hundred two thousand, one".