122028147 has 8 divisors (see below), whose sum is σ = 180782480. Its totient is φ = 81352080.

The previous prime is 122028131. The next prime is 122028149. The reversal of 122028147 is 741820221.

It is not a de Polignac number, because 122028147 - 2⁴ = 122028131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4519561 = 122028147 / (1 + 2 + 2 + 0 + 2 + 8 + 1 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122028147.

It is not an unprimeable number, because it can be changed into a prime (122028149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2259754 + ... + 2259807.

It is an arithmetic number, because the mean of its divisors is an integer number (22597810).

Almost surely, 2^122028147 is an apocalyptic number.

122028147 is a deficient number, since it is larger than the sum of its proper divisors (58754333).

122028147 is an equidigital number, since it uses as much as digits as its factorization.

122028147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519570 (or 4519564 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 122028147 is about 11046.6350985266. The cubic root of 122028147 is about 496.0057055253.

Adding to 122028147 its reverse (741820221), we get a palindrome (863848368).

The spelling of 122028147 in words is "one hundred twenty-two million, twenty-eight thousand, one hundred forty-seven".