1212002112 has 56 divisors (see below), whose sum is σ = 3346191936. Its totient is φ = 386434048.

The previous prime is 1212002111. The next prime is 1212002117. The reversal of 1212002112 is 2112002121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212002111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132813 + ... + 141644.

Almost surely, 2^1212002112 is an apocalyptic number.

1212002112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212002112 is an abundant number, since it is smaller than the sum of its proper divisors (2134189824).

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

1212002112 is a wasteful number, since it uses less digits than its factorization.

1212002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274495 (or 274485 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1212002112 is about 34813.8207038527. The cubic root of 1212002112 is about 1066.1896415620.

Adding to 1212002112 its reverse (2112002121), we get a palindrome (3324004233).

Subtracting 1212002112 from its reverse (2112002121), we obtain a palindrome (900000009).

The spelling of 1212002112 in words is "one billion, two hundred twelve million, two thousand, one hundred twelve".