122861082247 has 4 divisors (see below), whose sum is σ = 127097671320. Its totient is φ = 118624493176.

The previous prime is 122861082229. The next prime is 122861082271. The reversal of 122861082247 is 742280168221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742280168221 = 22859 ⋅32472119.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122861082247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122861082947) 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, 2118294493 + ... + 2118294550.

It is an arithmetic number, because the mean of its divisors is an integer number (31774417830).

Almost surely, 2^122861082247 is an apocalyptic number.

122861082247 is a deficient number, since it is larger than the sum of its proper divisors (4236589073).

122861082247 is an equidigital number, since it uses as much as digits as its factorization.

122861082247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236589072.

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 122861082247 in words is "one hundred twenty-two billion, eight hundred sixty-one million, eighty-two thousand, two hundred forty-seven".