121012312 has 8 divisors (see below), whose sum is σ = 226898100. Its totient is φ = 60506152.

The previous prime is 121012291. The next prime is 121012327. The reversal of 121012312 is 213210121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 121012292 and 121012301.

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 as a sum of consecutive naturals, namely, 7563262 + ... + 7563277.

Almost surely, 2^121012312 is an apocalyptic number.

It is an amenable number.

121012312 is a deficient number, since it is larger than the sum of its proper divisors (105885788).

121012312 is a wasteful number, since it uses less digits than its factorization.

121012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15126545 (or 15126541 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121012312 is about 11000.5596221283. The cubic root of 121012312 is about 494.6255195765.

Adding to 121012312 its reverse (213210121), we get a palindrome (334222433).

The spelling of 121012312 in words is "one hundred twenty-one million, twelve thousand, three hundred twelve".