121005412 has 12 divisors (see below), whose sum is σ = 231010416. Its totient is φ = 55002440.

The previous prime is 121005407. The next prime is 121005419. The reversal of 121005412 is 214500121.

It is not an unprimeable number, because it can be changed into a prime (121005419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375018 + ... + 1375105.

It is an arithmetic number, because the mean of its divisors is an integer number (19250868).

Almost surely, 2^121005412 is an apocalyptic number.

It is an amenable number.

121005412 is a deficient number, since it is larger than the sum of its proper divisors (110005004).

121005412 is a wasteful number, since it uses less digits than its factorization.

121005412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750138 (or 2750136 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 121005412 is about 11000.2459972493. The cubic root of 121005412 is about 494.6161183817.

Adding to 121005412 its reverse (214500121), we get a palindrome (335505533).

The spelling of 121005412 in words is "one hundred twenty-one million, five thousand, four hundred twelve".