2227106561 has 2 divisors, whose sum is σ = 2227106562. Its totient is φ = 2227106560.

The previous prime is 2227106549. The next prime is 2227106569. The reversal of 2227106561 is 1656017222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2158531600 + 68574961 = 46460^2 + 8281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2227106561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2227106569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113553280 + 1113553281.

It is an arithmetic number, because the mean of its divisors is an integer number (1113553281).

Almost surely, 2^2227106561 is an apocalyptic number.

It is an amenable number.

2227106561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2227106561 is an equidigital number, since it uses as much as digits as its factorization.

2227106561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2227106561 is about 47192.2298795045. The cubic root of 2227106561 is about 1305.9112577646.

The spelling of 2227106561 in words is "two billion, two hundred twenty-seven million, one hundred six thousand, five hundred sixty-one".