1231121112230 has 8 divisors (see below), whose sum is σ = 2216018002032. Its totient is φ = 492448444888.

The previous prime is 1231121112229. The next prime is 1231121112271. The reversal of 1231121112230 is 322111211321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61556055602 + ... + 61556055621.

It is an arithmetic number, because the mean of its divisors is an integer number (277002250254).

Almost surely, 2^{1231121112230} is an apocalyptic number.

1231121112230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231121112230 is a deficient number, since it is larger than the sum of its proper divisors (984896889802).

1231121112230 is a wasteful number, since it uses less digits than its factorization.

1231121112230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123112111230.

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

Adding to 1231121112230 its reverse (322111211321), we get a palindrome (1553232323551).

Subtracting from 1231121112230 its reverse (322111211321), we obtain a palindrome (909009900909).

The spelling of 1231121112230 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred thirty".