121212441 has 48 divisors (see below), whose sum is σ = 206938368. Its totient is φ = 66931200.

The previous prime is 121212439. The next prime is 121212463. The reversal of 121212441 is 144212121.

121212441 is a `hidden beast` number, since 1 + 212 + 12 + 441 = 666.

It is not a de Polignac number, because 121212441 - 2¹ = 121212439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121212341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431221 + ... + 431501.

It is an arithmetic number, because the mean of its divisors is an integer number (4311216).

Almost surely, 2^121212441 is an apocalyptic number.

It is an amenable number.

121212441 is a deficient number, since it is larger than the sum of its proper divisors (85725927).

121212441 is a wasteful number, since it uses less digits than its factorization.

121212441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 499 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 121212441 is about 11009.6521743423. The cubic root of 121212441 is about 494.8980383808.

Adding to 121212441 its reverse (144212121), we get a palindrome (265424562).

The spelling of 121212441 in words is "one hundred twenty-one million, two hundred twelve thousand, four hundred forty-one".