1212210012 has 24 divisors (see below), whose sum is σ = 3046066576. Its totient is φ = 372987648.

The previous prime is 1212210001. The next prime is 1212210023. The reversal of 1212210012 is 2100122121.

It is an interprime number because it is at equal distance from previous prime (1212210001) and next prime (1212210023).

It is a super-2 number, since 2×1212210012² = 2938906226386080288, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1212210012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3885133 + ... + 3885444.

Almost surely, 2^1212210012 is an apocalyptic number.

1212210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212210012 is an abundant number, since it is smaller than the sum of its proper divisors (1833856564).

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

1212210012 is a wasteful number, since it uses less digits than its factorization.

1212210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770597 (or 7770595 counting only the distinct ones).

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

The square root of 1212210012 is about 34816.8064589503. The cubic root of 1212210012 is about 1066.2506007940.

Adding to 1212210012 its reverse (2100122121), we get a palindrome (3312332133).

The spelling of 1212210012 in words is "one billion, two hundred twelve million, two hundred ten thousand, twelve".