1212116512 has 12 divisors (see below), whose sum is σ = 2386354446. Its totient is φ = 606058240.

The previous prime is 1212116483. The next prime is 1212116527. The reversal of 1212116512 is 2156112121.

It can be written as a sum of positive squares in only one way, i.e., 1210761616 + 1354896 = 34796^2 + 1164^2 .

It is a super-2 number, since 2×1212116512² = 2938452877326092288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18939289 + ... + 18939352.

Almost surely, 2^1212116512 is an apocalyptic number.

It is an amenable number.

1212116512 is a deficient number, since it is larger than the sum of its proper divisors (1174237934).

1212116512 is an equidigital number, since it uses as much as digits as its factorization.

1212116512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37878651 (or 37878643 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 1212116512 is about 34815.4636907223. The cubic root of 1212116512 is about 1066.2231861289.

Adding to 1212116512 its reverse (2156112121), we get a palindrome (3368228633).

The spelling of 1212116512 in words is "one billion, two hundred twelve million, one hundred sixteen thousand, five hundred twelve".