12122112010103 has 4 divisors (see below), whose sum is σ = 12835177422480. Its totient is φ = 11409046597728.

The previous prime is 12122112010097. The next prime is 12122112010277. The reversal of 12122112010103 is 30101021122121.

It is a happy number.

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 12122112010103 - 2⁶ = 12122112010039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 713065412359 = 12122112010103 / (1 + 2 + 1 + 2 + 2 + 1 + 1 + 2 + 0 + 1 + 0 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122112013103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356532706163 + ... + 356532706196.

It is an arithmetic number, because the mean of its divisors is an integer number (3208794355620).

Almost surely, 2^{12122112010103} is an apocalyptic number.

12122112010103 is a deficient number, since it is larger than the sum of its proper divisors (713065412377).

12122112010103 is an equidigital number, since it uses as much as digits as its factorization.

12122112010103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713065412376.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12122112010103 its reverse (30101021122121), we get a palindrome (42223133132224).

The spelling of 12122112010103 in words is "twelve trillion, one hundred twenty-two billion, one hundred twelve million, ten thousand, one hundred three".