121311322112 has 28 divisors (see below), whose sum is σ = 242607852096. Its totient is φ = 60655656960.

The previous prime is 121311322087. The next prime is 121311322123. The reversal of 121311322112 is 211223113121.

It is a super-2 number, since 2×121311322112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7396064 + ... + 7412447.

Almost surely, 2^121311322112 is an apocalyptic number.

It is an amenable number.

121311322112 is a deficient number, since it is larger than the sum of its proper divisors (121296529984).

121311322112 is an frugal number, since it uses more digits than its factorization.

121311322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14808537 (or 14808513 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 121311322112 its reverse (211223113121), we get a palindrome (332534435233).

The spelling of 121311322112 in words is "one hundred twenty-one billion, three hundred eleven million, three hundred twenty-two thousand, one hundred twelve".