121223311231 has 8 divisors (see below), whose sum is σ = 132974242128. Its totient is φ = 109594152000.

The previous prime is 121223311229. The next prime is 121223311243. The reversal of 121223311231 is 132113322121.

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 121223311231 - 2¹ = 121223311229 is a prime.

It is a super-2 number, since 2×121223311231² (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 (121223311201) 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, 30440830 + ... + 30444811.

It is an arithmetic number, because the mean of its divisors is an integer number (16621780266).

Almost surely, 2^121223311231 is an apocalyptic number.

121223311231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121223311231 is a deficient number, since it is larger than the sum of its proper divisors (11750930897).

121223311231 is a wasteful number, since it uses less digits than its factorization.

121223311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60885833.

The product of its digits is 432, while the sum is 22.

Adding to 121223311231 its reverse (132113322121), we get a palindrome (253336633352).

The spelling of 121223311231 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred eleven thousand, two hundred thirty-one".