121154333142 has 16 divisors (see below), whose sum is σ = 246880528560. Its totient is φ = 39622800672.

The previous prime is 121154333141. The next prime is 121154333147. The reversal of 121154333142 is 241333451121.

121154333142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154333141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190493917 + ... + 190494552.

It is an arithmetic number, because the mean of its divisors is an integer number (15430033035).

Almost surely, 2^121154333142 is an apocalyptic number.

121154333142 is an abundant number, since it is smaller than the sum of its proper divisors (125726195418).

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

121154333142 is a wasteful number, since it uses less digits than its factorization.

121154333142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380988527.

The product of its digits is 8640, while the sum is 30.

Adding to 121154333142 its reverse (241333451121), we get a palindrome (362487784263).

The spelling of 121154333142 in words is "one hundred twenty-one billion, one hundred fifty-four million, three hundred thirty-three thousand, one hundred forty-two".