121103221311 has 32 divisors (see below), whose sum is σ = 180716083200. Its totient is φ = 80150238720.

The previous prime is 121103221297. The next prime is 121103221319. The reversal of 121103221311 is 113122301121.

121103221311 is a `hidden beast` number, since 1 + 21 + 10 + 322 + 1 + 311 = 666.

It is not a de Polignac number, because 121103221311 - 2¹⁴ = 121103204927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103221319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2912991 + ... + 2954271.

It is an arithmetic number, because the mean of its divisors is an integer number (5647377600).

Almost surely, 2^121103221311 is an apocalyptic number.

121103221311 is a deficient number, since it is larger than the sum of its proper divisors (59612861889).

121103221311 is a wasteful number, since it uses less digits than its factorization.

121103221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42076 (or 42070 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121103221311 its reverse (113122301121), we get a palindrome (234225522432).

The spelling of 121103221311 in words is "one hundred twenty-one billion, one hundred three million, two hundred twenty-one thousand, three hundred eleven".