122786467281 has 9 divisors (see below), whose sum is σ = 177359748969. Its totient is φ = 81856944036.

The previous prime is 122786467261. The next prime is 122786467313. The reversal of 122786467281 is 182764687221.

The square root of 122786467281 is 350409.

It is a perfect power (a square), and thus also a powerful number.

122786467281 is a `hidden beast` number, since 1 + 2 + 27 + 86 + 467 + 2 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 122786467281 - 2⁹ = 122786466769 is a prime.

It is a super-2 number, since 2×122786467281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122786467261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 992826 + ... + 1109628.

Almost surely, 2^122786467281 is an apocalyptic number.

122786467281 is the 350409-th square number.

122786467281 is the 175205-th centered octagonal number.

It is an amenable number.

122786467281 is a deficient number, since it is larger than the sum of its proper divisors (54573281688).

122786467281 is an frugal number, since it uses more digits than its factorization.

122786467281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233612 (or 116806 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 122786467281 in words is "one hundred twenty-two billion, seven hundred eighty-six million, four hundred sixty-seven thousand, two hundred eighty-one".