221101143401 has 4 divisors (see below), whose sum is σ = 221176376400. Its totient is φ = 221025910404.

The previous prime is 221101143397. The next prime is 221101143437. The reversal of 221101143401 is 104341101122.

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 not a de Polignac number, because 221101143401 - 2² = 221101143397 is a prime.

It is a super-2 number, since 2×221101143401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221101143001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37612091 + ... + 37617968.

It is an arithmetic number, because the mean of its divisors is an integer number (55294094100).

Almost surely, 2^221101143401 is an apocalyptic number.

It is an amenable number.

221101143401 is a deficient number, since it is larger than the sum of its proper divisors (75232999).

221101143401 is an equidigital number, since it uses as much as digits as its factorization.

221101143401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75232998.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221101143401 its reverse (104341101122), we get a palindrome (325442244523).

The spelling of 221101143401 in words is "two hundred twenty-one billion, one hundred one million, one hundred forty-three thousand, four hundred one".