1212251232116 has 6 divisors (see below), whose sum is σ = 2121439656210. Its totient is φ = 606125616056.

The previous prime is 1212251232103. The next prime is 1212251232161. The reversal of 1212251232116 is 6112321522121.

It can be written as a sum of positive squares in only one way, i.e., 1001940940900 + 210310291216 = 1000970^2 + 458596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151531404011 + ... + 151531404018.

It is an arithmetic number, because the mean of its divisors is an integer number (353573276035).

Almost surely, 2^{1212251232116} is an apocalyptic number.

It is an amenable number.

1212251232116 is a deficient number, since it is larger than the sum of its proper divisors (909188424094).

1212251232116 is a wasteful number, since it uses less digits than its factorization.

1212251232116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303062808033 (or 303062808031 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

Adding to 1212251232116 its reverse (6112321522121), we get a palindrome (7324572754237).

The spelling of 1212251232116 in words is "one trillion, two hundred twelve billion, two hundred fifty-one million, two hundred thirty-two thousand, one hundred sixteen".