122581643 has 2 divisors, whose sum is σ = 122581644. Its totient is φ = 122581642.

The previous prime is 122581607. The next prime is 122581663. The reversal of 122581643 is 346185221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122581643 - 2⁸ = 122581387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (122581663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61290821 + 61290822.

It is an arithmetic number, because the mean of its divisors is an integer number (61290822).

Almost surely, 2^122581643 is an apocalyptic number.

122581643 is a deficient number, since it is larger than the sum of its proper divisors (1).

122581643 is an equidigital number, since it uses as much as digits as its factorization.

122581643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 122581643 is about 11071.6594510489. The cubic root of 122581643 is about 496.7545030803.

The spelling of 122581643 in words is "one hundred twenty-two million, five hundred eighty-one thousand, six hundred forty-three".