122784901251 has 8 divisors (see below), whose sum is σ = 164627801280. Its totient is φ = 81399301032.

The previous prime is 122784901231. The next prime is 122784901259. The reversal of 122784901251 is 152109487221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122784901251 - 2¹⁴ = 122784884867 is a prime.

It is a super-2 number, since 2×122784901251² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122784901259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114324325 + ... + 114325398.

It is an arithmetic number, because the mean of its divisors is an integer number (20578475160).

Almost surely, 2^122784901251 is an apocalyptic number.

122784901251 is a deficient number, since it is larger than the sum of its proper divisors (41842900029).

122784901251 is a wasteful number, since it uses less digits than its factorization.

122784901251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228649905.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 122784901251 in words is "one hundred twenty-two billion, seven hundred eighty-four million, nine hundred one thousand, two hundred fifty-one".