2221411161 has 4 divisors (see below), whose sum is σ = 2961881552. Its totient is φ = 1480940772.

The previous prime is 2221411133. The next prime is 2221411177. The reversal of 2221411161 is 1611141222.

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 not a de Polignac number, because 2221411161 - 2¹³ = 2221402969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221411561) 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, 370235191 + ... + 370235196.

It is an arithmetic number, because the mean of its divisors is an integer number (740470388).

Almost surely, 2^2221411161 is an apocalyptic number.

It is an amenable number.

2221411161 is a deficient number, since it is larger than the sum of its proper divisors (740470391).

2221411161 is an equidigital number, since it uses as much as digits as its factorization.

2221411161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740470390.

The product of its digits is 192, while the sum is 21.

The square root of 2221411161 is about 47131.8486906678. The cubic root of 2221411161 is about 1304.7971012044.

Adding to 2221411161 its reverse (1611141222), we get a palindrome (3832552383).

The spelling of 2221411161 in words is "two billion, two hundred twenty-one million, four hundred eleven thousand, one hundred sixty-one".