121154432313211 has 8 divisors (see below), whose sum is σ = 132483909499200. Its totient is φ = 109877528108040.

The previous prime is 121154432313203. The next prime is 121154432313247. The reversal of 121154432313211 is 112313234451121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121154432313211 - 2³ = 121154432313203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121154432313311) 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, 13143240381 + ... + 13143249598.

It is an arithmetic number, because the mean of its divisors is an integer number (16560488687400).

Almost surely, 2^{121154432313211} is an apocalyptic number.

121154432313211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121154432313211 is a deficient number, since it is larger than the sum of its proper divisors (11329477185989).

121154432313211 is a wasteful number, since it uses less digits than its factorization.

121154432313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26286490409.

The product of its digits is 17280, while the sum is 34.

Adding to 121154432313211 its reverse (112313234451121), we get a palindrome (233467666764332).

The spelling of 121154432313211 in words is "one hundred twenty-one trillion, one hundred fifty-four billion, four hundred thirty-two million, three hundred thirteen thousand, two hundred eleven".