121212112303 has 8 divisors (see below), whose sum is σ = 124173110880. Its totient is φ = 118251333120.

The previous prime is 121212112291. The next prime is 121212112339. The reversal of 121212112303 is 303211212121.

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 121212112303 - 2⁵ = 121212112271 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 (121212112103) 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, 1927918 + ... + 1989796.

It is an arithmetic number, because the mean of its divisors is an integer number (15521638860).

Almost surely, 2^121212112303 is an apocalyptic number.

121212112303 is a deficient number, since it is larger than the sum of its proper divisors (2960998577).

121212112303 is an equidigital number, since it uses as much as digits as its factorization.

121212112303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109697.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121212112303 its reverse (303211212121), we get a palindrome (424423324424).

The spelling of 121212112303 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, three hundred three".