1212213112112 has 10 divisors (see below), whose sum is σ = 2348662904748. Its totient is φ = 606106556048.

The previous prime is 1212213112079. The next prime is 1212213112129. The reversal of 1212213112112 is 2112113122121.

It is a super-2 number, since 2×1212213112112² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37881659738 + ... + 37881659769.

Almost surely, 2^{1212213112112} is an apocalyptic number.

It is an amenable number.

1212213112112 is a deficient number, since it is larger than the sum of its proper divisors (1136449792636).

1212213112112 is an equidigital number, since it uses as much as digits as its factorization.

1212213112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75763319515 (or 75763319509 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

Adding to 1212213112112 its reverse (2112113122121), we get a palindrome (3324326234233).

The spelling of 1212213112112 in words is "one trillion, two hundred twelve billion, two hundred thirteen million, one hundred twelve thousand, one hundred twelve".