121121111122012 has 12 divisors (see below), whose sum is σ = 212124118875480. Its totient is φ = 60514220014736.

The previous prime is 121121111122003. The next prime is 121121111122021. The reversal of 121121111122012 is 210221111121121.

121121111122012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121121111122003) and next prime (121121111122021).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11583880687 + ... + 11583891142.

It is an arithmetic number, because the mean of its divisors is an integer number (17677009906290).

Almost surely, 2^{121121111122012} is an apocalyptic number.

It is an amenable number.

121121111122012 is a deficient number, since it is larger than the sum of its proper divisors (91003007753468).

121121111122012 is a wasteful number, since it uses less digits than its factorization.

121121111122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23167773140 (or 23167773138 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121121111122012 its reverse (210221111121121), we get a palindrome (331342222243133).

The spelling of 121121111122012 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twenty-two thousand, twelve".