1212102112 has 48 divisors (see below), whose sum is σ = 2705164560. Its totient is φ = 529984512.

The previous prime is 1212102109. The next prime is 1212102121. The reversal of 1212102112 is 2112012121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1212102092 and 1212102101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68773 + ... + 84580.

It is an arithmetic number, because the mean of its divisors is an integer number (56357595).

Almost surely, 2^1212102112 is an apocalyptic number.

It is an amenable number.

1212102112 is an abundant number, since it is smaller than the sum of its proper divisors (1493062448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212102112 is a wasteful number, since it uses less digits than its factorization.

1212102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153395 (or 153387 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1212102112 is about 34815.2568854518. The cubic root of 1212102112 is about 1066.2189638520.

Adding to 1212102112 its reverse (2112012121), we get a palindrome (3324114233).

The spelling of 1212102112 in words is "one billion, two hundred twelve million, one hundred two thousand, one hundred twelve".