122120151 has 4 divisors (see below), whose sum is σ = 162826872. Its totient is φ = 81413432.

The previous prime is 122120143. The next prime is 122120161. The reversal of 122120151 is 151021221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122120151 - 2³ = 122120143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122120151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20353356 + ... + 20353361.

It is an arithmetic number, because the mean of its divisors is an integer number (40706718).

Almost surely, 2^122120151 is an apocalyptic number.

122120151 is a deficient number, since it is larger than the sum of its proper divisors (40706721).

122120151 is an equidigital number, since it uses as much as digits as its factorization.

122120151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40706720.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 122120151 is about 11050.7986589205. The cubic root of 122120151 is about 496.1303299010.

Adding to 122120151 its reverse (151021221), we get a palindrome (273141372).

The spelling of 122120151 in words is "one hundred twenty-two million, one hundred twenty thousand, one hundred fifty-one".