121113212231 has 8 divisors (see below), whose sum is σ = 134362886400. Its totient is φ = 108236768440.

The previous prime is 121113212197. The next prime is 121113212309. The reversal of 121113212231 is 132212311121.

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

It is a cyclic number.

It is not a de Polignac number, because 121113212231 - 2⁶ = 121113212167 is a prime.

It is a super-2 number, since 2×121113212231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113214231) 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, 93306911 + ... + 93308208.

It is an arithmetic number, because the mean of its divisors is an integer number (16795360800).

Almost surely, 2^121113212231 is an apocalyptic number.

121113212231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121113212231 is a deficient number, since it is larger than the sum of its proper divisors (13249674169).

121113212231 is a wasteful number, since it uses less digits than its factorization.

121113212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186615189.

The product of its digits is 144, while the sum is 20.

Adding to 121113212231 its reverse (132212311121), we get a palindrome (253325523352).

The spelling of 121113212231 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred twelve thousand, two hundred thirty-one".