1212020112 has 40 divisors (see below), whose sum is σ = 3190135104. Its totient is φ = 396383104.

The previous prime is 1212020093. The next prime is 1212020123. The reversal of 1212020112 is 2110202121.

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

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, 235668 + ... + 240755.

Almost surely, 2^1212020112 is an apocalyptic number.

1212020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212020112 is an abundant number, since it is smaller than the sum of its proper divisors (1978114992).

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

1212020112 is a wasteful number, since it uses less digits than its factorization.

1212020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476487 (or 476481 counting only the distinct ones).

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

The square root of 1212020112 is about 34814.0792209129. The cubic root of 1212020112 is about 1066.1949196932.

Adding to 1212020112 its reverse (2110202121), we get a palindrome (3322222233).

The spelling of 1212020112 in words is "one billion, two hundred twelve million, twenty thousand, one hundred twelve".