61112213 has 2 divisors, whose sum is σ = 61112214. Its totient is φ = 61112212.

The previous prime is 61112203. The next prime is 61112237. The reversal of 61112213 is 31221116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61105489 + 6724 = 7817^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 61112213 - 2¹⁴ = 61095829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61112191 and 61112200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61112203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30556106 + 30556107.

It is an arithmetic number, because the mean of its divisors is an integer number (30556107).

Almost surely, 2^61112213 is an apocalyptic number.

It is an amenable number.

61112213 is a deficient number, since it is larger than the sum of its proper divisors (1).

61112213 is an equidigital number, since it uses as much as digits as its factorization.

61112213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 61112213 is about 7817.4300764382. The cubic root of 61112213 is about 393.8909508647.

Adding to 61112213 its reverse (31221116), we get a palindrome (92333329).

The spelling of 61112213 in words is "sixty-one million, one hundred twelve thousand, two hundred thirteen".