121323412 has 18 divisors (see below), whose sum is σ = 246980202. Its totient is φ = 51995664.

The previous prime is 121323409. The next prime is 121323473. The reversal of 121323412 is 214323121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90897156 + 30426256 = 9534^2 + 5516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121323412.

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 in 5 ways as a sum of consecutive naturals, for example, 309303 + ... + 309694.

Almost surely, 2^121323412 is an apocalyptic number.

It is an amenable number.

121323412 is an abundant number, since it is smaller than the sum of its proper divisors (125656790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121323412 is a wasteful number, since it uses less digits than its factorization.

121323412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619015 (or 619006 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 121323412 is about 11014.6907355586. The cubic root of 121323412 is about 495.0490200748.

Adding to 121323412 its reverse (214323121), we get a palindrome (335646533).

The spelling of 121323412 in words is "one hundred twenty-one million, three hundred twenty-three thousand, four hundred twelve".