1212112121193 has 12 divisors (see below), whose sum is σ = 1793531757108. Its totient is φ = 788365607040.

The previous prime is 1212112121191. The next prime is 1212112121239. The reversal of 1212112121193 is 3911212112121.

1212112121193 is a `hidden beast` number, since 121 + 211 + 212 + 119 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79937383824 + 1132174737369 = 282732^2 + 1064037^2 .

It is not a de Polignac number, because 1212112121193 - 2¹ = 1212112121191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212112121191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1642427980 + ... + 1642428717.

It is an arithmetic number, because the mean of its divisors is an integer number (149460979759).

Almost surely, 2^{1212112121193} is an apocalyptic number.

It is an amenable number.

1212112121193 is a deficient number, since it is larger than the sum of its proper divisors (581419635915).

1212112121193 is a wasteful number, since it uses less digits than its factorization.

1212112121193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284856744 (or 3284856741 counting only the distinct ones).

The product of its digits is 432, while the sum is 27.

The spelling of 1212112121193 in words is "one trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, one hundred ninety-three".