121440433311 has 24 divisors (see below), whose sum is σ = 179065560960. Its totient is φ = 79285373136.

The previous prime is 121440433273. The next prime is 121440433357. The reversal of 121440433311 is 113334044121.

121440433311 is a `hidden beast` number, since 1 + 214 + 4 + 0 + 433 + 3 + 11 = 666.

It is not a de Polignac number, because 121440433311 - 2¹¹ = 121440431263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121440433391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295141 + ... + 574446.

It is an arithmetic number, because the mean of its divisors is an integer number (7461065040).

Almost surely, 2^121440433311 is an apocalyptic number.

121440433311 is a deficient number, since it is larger than the sum of its proper divisors (57625127649).

121440433311 is a wasteful number, since it uses less digits than its factorization.

121440433311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869915 (or 869912 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 121440433311 its reverse (113334044121), we get a palindrome (234774477432).

The spelling of 121440433311 in words is "one hundred twenty-one billion, four hundred forty million, four hundred thirty-three thousand, three hundred eleven".