122012121986 has 8 divisors (see below), whose sum is σ = 183129988860. Its totient is φ = 60968792368.

The previous prime is 122012121967. The next prime is 122012122009. The reversal of 122012121986 is 689121210221.

It can be written as a sum of positive squares in 2 ways, for example, as 108524783761 + 13487338225 = 329431^2 + 116135^2 .

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

It is a Curzon 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 in 3 ways as a sum of consecutive naturals, for example, 18630221 + ... + 18636768.

Almost surely, 2^122012121986 is an apocalyptic number.

122012121986 is a deficient number, since it is larger than the sum of its proper divisors (61117866874).

122012121986 is a wasteful number, since it uses less digits than its factorization.

122012121986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37268628.

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 122012121986 in words is "one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, nine hundred eighty-six".