122720327494 has 4 divisors (see below), whose sum is σ = 184080491244. Its totient is φ = 61360163746.

The previous prime is 122720327399. The next prime is 122720327503. The reversal of 122720327494 is 494723027221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×122720327494² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122720327494.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30680081872 + ... + 30680081875.

It is an arithmetic number, because the mean of its divisors is an integer number (46020122811).

Almost surely, 2^122720327494 is an apocalyptic number.

122720327494 is a deficient number, since it is larger than the sum of its proper divisors (61360163750).

122720327494 is an equidigital number, since it uses as much as digits as its factorization.

122720327494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61360163749.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 122720327494 in words is "one hundred twenty-two billion, seven hundred twenty million, three hundred twenty-seven thousand, four hundred ninety-four".