123122251 has 16 divisors (see below), whose sum is σ = 144088000. Its totient is φ = 105162624.

The previous prime is 123122249. The next prime is 123122257. The reversal of 123122251 is 152221321.

It is not a de Polignac number, because 123122251 - 2¹ = 123122249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123122257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148105 + ... + 148933.

It is an arithmetic number, because the mean of its divisors is an integer number (9005500).

Almost surely, 2^123122251 is an apocalyptic number.

123122251 is a deficient number, since it is larger than the sum of its proper divisors (20965749).

123122251 is an frugal number, since it uses more digits than its factorization.

123122251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 1269 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 123122251 is about 11096.0466383302. The cubic root of 123122251 is about 497.4836923015.

Adding to 123122251 its reverse (152221321), we get a palindrome (275343572).

The spelling of 123122251 in words is "one hundred twenty-three million, one hundred twenty-two thousand, two hundred fifty-one".