221142311241 has 4 divisors (see below), whose sum is σ = 294856414992. Its totient is φ = 147428207492.

The previous prime is 221142311239. The next prime is 221142311249. The reversal of 221142311241 is 142113241122.

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 221142311241 - 2¹ = 221142311239 is a prime.

It is a super-2 number, since 2×221142311241² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221142311249) 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, 36857051871 + ... + 36857051876.

It is an arithmetic number, because the mean of its divisors is an integer number (73714103748).

Almost surely, 2^221142311241 is an apocalyptic number.

It is an amenable number.

221142311241 is a deficient number, since it is larger than the sum of its proper divisors (73714103751).

221142311241 is an equidigital number, since it uses as much as digits as its factorization.

221142311241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73714103750.

The product of its digits is 768, while the sum is 24.

Adding to 221142311241 its reverse (142113241122), we get a palindrome (363255552363).

The spelling of 221142311241 in words is "two hundred twenty-one billion, one hundred forty-two million, three hundred eleven thousand, two hundred forty-one".