122728051 has 2 divisors, whose sum is σ = 122728052. Its totient is φ = 122728050.

The previous prime is 122728027. The next prime is 122728061. The reversal of 122728051 is 150827221.

It is a strong prime.

It is an emirp because it is prime and its reverse (150827221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122728051 - 2⁷ = 122727923 is a prime.

It is not a weakly prime, because it can be changed into another prime (122728061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61364025 + 61364026.

It is an arithmetic number, because the mean of its divisors is an integer number (61364026).

Almost surely, 2^122728051 is an apocalyptic number.

122728051 is a deficient number, since it is larger than the sum of its proper divisors (1).

122728051 is an equidigital number, since it uses as much as digits as its factorization.

122728051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 122728051 is about 11078.2693142927. The cubic root of 122728051 is about 496.9521941745.

The spelling of 122728051 in words is "one hundred twenty-two million, seven hundred twenty-eight thousand, fifty-one".