1242222112231 has 4 divisors (see below), whose sum is σ = 1242231210864. Its totient is φ = 1242213013600.

The previous prime is 1242222112223. The next prime is 1242222112253. The reversal of 1242222112231 is 1322112222421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1242222112231 - 2³ = 1242222112223 is a prime.

It is a super-2 number, since 2×1242222112231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242222112196 and 1242222112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242222112291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4341355 + ... + 4618636.

It is an arithmetic number, because the mean of its divisors is an integer number (310557802716).

Almost surely, 2^{1242222112231} is an apocalyptic number.

1242222112231 is a deficient number, since it is larger than the sum of its proper divisors (9098633).

1242222112231 is an equidigital number, since it uses as much as digits as its factorization.

1242222112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098632.

The product of its digits is 1536, while the sum is 25.

Adding to 1242222112231 its reverse (1322112222421), we get a palindrome (2564334334652).

The spelling of 1242222112231 in words is "one trillion, two hundred forty-two billion, two hundred twenty-two million, one hundred twelve thousand, two hundred thirty-one".