121711312 has 20 divisors (see below), whose sum is σ = 237056256. Its totient is φ = 60535520.

The previous prime is 121711297. The next prime is 121711351. The reversal of 121711312 is 213117121.

It is a super-2 number, since 2×121711312² = 29627286937522688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121711312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16858 + ... + 22969.

Almost surely, 2^121711312 is an apocalyptic number.

It is an amenable number.

121711312 is a deficient number, since it is larger than the sum of its proper divisors (115344944).

121711312 is a wasteful number, since it uses less digits than its factorization.

121711312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40026 (or 40020 counting only the distinct ones).

The product of its digits is 84, while the sum is 19.

The square root of 121711312 is about 11032.2849854416. The cubic root of 121711312 is about 495.5760555405.

Adding to 121711312 its reverse (213117121), we get a palindrome (334828433).

The spelling of 121711312 in words is "one hundred twenty-one million, seven hundred eleven thousand, three hundred twelve".