221195341369 has 4 divisors (see below), whose sum is σ = 221694654096. Its totient is φ = 220696028644.

The previous prime is 221195341277. The next prime is 221195341391. The reversal of 221195341369 is 963143591122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 963143591122 = 2 ⋅481571795561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221195341369 is a prime.

It is a super-2 number, since 2×221195341369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221195341399) 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, 249655699 + ... + 249656584.

It is an arithmetic number, because the mean of its divisors is an integer number (55423663524).

Almost surely, 2^221195341369 is an apocalyptic number.

It is an amenable number.

221195341369 is a deficient number, since it is larger than the sum of its proper divisors (499312727).

221195341369 is an equidigital number, since it uses as much as digits as its factorization.

221195341369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499312726.

The product of its digits is 349920, while the sum is 46.

The spelling of 221195341369 in words is "two hundred twenty-one billion, one hundred ninety-five million, three hundred forty-one thousand, three hundred sixty-nine".