221440100020401 has 8 divisors (see below), whose sum is σ = 295344118677024. Its totient is φ = 147581407355360.

The previous prime is 221440100020397. The next prime is 221440100020409. The reversal of 221440100020401 is 104020001044122.

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 221440100020401 - 2² = 221440100020397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221440100020409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11331486495 + ... + 11331506036.

It is an arithmetic number, because the mean of its divisors is an integer number (36918014834628).

Almost surely, 2^{221440100020401} is an apocalyptic number.

It is an amenable number.

221440100020401 is a deficient number, since it is larger than the sum of its proper divisors (73904018656623).

221440100020401 is a wasteful number, since it uses less digits than its factorization.

221440100020401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22662995791.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221440100020401 its reverse (104020001044122), we get a palindrome (325460101064523).

The spelling of 221440100020401 in words is "two hundred twenty-one trillion, four hundred forty billion, one hundred million, twenty thousand, four hundred one".