1230121112663 has 4 divisors (see below), whose sum is σ = 1230142880280. Its totient is φ = 1230099345048.

The previous prime is 1230121112639. The next prime is 1230121112681. The reversal of 1230121112663 is 3662111210321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230121112663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230121112063) 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, 10798820 + ... + 10912137.

It is an arithmetic number, because the mean of its divisors is an integer number (307535720070).

Almost surely, 2^{1230121112663} is an apocalyptic number.

1230121112663 is a deficient number, since it is larger than the sum of its proper divisors (21767617).

1230121112663 is an equidigital number, since it uses as much as digits as its factorization.

1230121112663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21767616.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 1230121112663 its reverse (3662111210321), we get a palindrome (4892232322984).

The spelling of 1230121112663 in words is "one trillion, two hundred thirty billion, one hundred twenty-one million, one hundred twelve thousand, six hundred sixty-three".