61222207 has 2 divisors, whose sum is σ = 61222208. Its totient is φ = 61222206.

The previous prime is 61222201. The next prime is 61222243. The reversal of 61222207 is 70222216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61222207 - 2⁷ = 61222079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30611103 + 30611104.

It is an arithmetic number, because the mean of its divisors is an integer number (30611104).

Almost surely, 2^61222207 is an apocalyptic number.

61222207 is a deficient number, since it is larger than the sum of its proper divisors (1).

61222207 is an equidigital number, since it uses as much as digits as its factorization.

61222207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 61222207 is about 7824.4620901376. The cubic root of 61222207 is about 394.1271266446.

Subtracting 61222207 from its reverse (70222216), we obtain a palindrome (9000009).

The spelling of 61222207 in words is "sixty-one million, two hundred twenty-two thousand, two hundred seven".