121312124441 has 16 divisors (see below), whose sum is σ = 124944882048. Its totient is φ = 117735340800.

The previous prime is 121312124327. The next prime is 121312124459. The reversal of 121312124441 is 144421213121.

It is a cyclic number.

It is not a de Polignac number, because 121312124441 - 2²² = 121307930137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121312124441.

It is not an unprimeable number, because it can be changed into a prime (121312124641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7379411 + ... + 7395831.

It is an arithmetic number, because the mean of its divisors is an integer number (7809055128).

Almost surely, 2^121312124441 is an apocalyptic number.

It is an amenable number.

121312124441 is a deficient number, since it is larger than the sum of its proper divisors (3632757607).

121312124441 is a wasteful number, since it uses less digits than its factorization.

121312124441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18112.

The product of its digits is 1536, while the sum is 26.

Adding to 121312124441 its reverse (144421213121), we get a palindrome (265733337562).

The spelling of 121312124441 in words is "one hundred twenty-one billion, three hundred twelve million, one hundred twenty-four thousand, four hundred forty-one".