122102251 has 4 divisors (see below), whose sum is σ = 122187400. Its totient is φ = 122017104.

The previous prime is 122102243. The next prime is 122102261. The reversal of 122102251 is 152201221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152201221 = 17 ⋅8953013.

It is a cyclic number.

It is not a de Polignac number, because 122102251 - 2³ = 122102243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122102231) 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, 40386 + ... + 43303.

It is an arithmetic number, because the mean of its divisors is an integer number (30546850).

Almost surely, 2^122102251 is an apocalyptic number.

122102251 is a deficient number, since it is larger than the sum of its proper divisors (85149).

122102251 is an equidigital number, since it uses as much as digits as its factorization.

122102251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85148.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 122102251 is about 11049.9887330259. The cubic root of 122102251 is about 496.1060882921.

Adding to 122102251 its reverse (152201221), we get a palindrome (274303472).

The spelling of 122102251 in words is "one hundred twenty-two million, one hundred two thousand, two hundred fifty-one".