122147869 has 2 divisors, whose sum is σ = 122147870. Its totient is φ = 122147868.

The previous prime is 122147849. The next prime is 122147899. The reversal of 122147869 is 968741221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122102500 + 45369 = 11050^2 + 213^2 .

It is a cyclic number.

It is not a de Polignac number, because 122147869 - 2⁷ = 122147741 is a prime.

It is a super-2 number, since 2×122147869² = 29840203802482322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122147819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61073934 + 61073935.

It is an arithmetic number, because the mean of its divisors is an integer number (61073935).

Almost surely, 2^122147869 is an apocalyptic number.

It is an amenable number.

122147869 is a deficient number, since it is larger than the sum of its proper divisors (1).

122147869 is an equidigital number, since it uses as much as digits as its factorization.

122147869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 122147869 is about 11052.0527052670. The cubic root of 122147869 is about 496.1678631557.

The spelling of 122147869 in words is "one hundred twenty-two million, one hundred forty-seven thousand, eight hundred sixty-nine".