121035512433155 has 4 divisors (see below), whose sum is σ = 145242614919792. Its totient is φ = 96828409946520.

The previous prime is 121035512433151. The next prime is 121035512433163. The reversal of 121035512433155 is 551334215530121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121035512433155 - 2² = 121035512433151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121035512433151) 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, 12103551243311 + ... + 12103551243320.

It is an arithmetic number, because the mean of its divisors is an integer number (36310653729948).

Almost surely, 2^{121035512433155} is an apocalyptic number.

121035512433155 is a deficient number, since it is larger than the sum of its proper divisors (24207102486637).

121035512433155 is an equidigital number, since it uses as much as digits as its factorization.

121035512433155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24207102486636.

The product of its (nonzero) digits is 270000, while the sum is 41.

Adding to 121035512433155 its reverse (551334215530121), we get a palindrome (672369727963276).

The spelling of 121035512433155 in words is "one hundred twenty-one trillion, thirty-five billion, five hundred twelve million, four hundred thirty-three thousand, one hundred fifty-five".