1212021210012 has 48 divisors (see below), whose sum is σ = 2943086952960. Its totient is φ = 387739989952.

The previous prime is 1212021209989. The next prime is 1212021210031. The reversal of 1212021210012 is 2100121202121.

It is a junction number, because it is equal to n+sod(n) for n = 1212021209973 and 1212021210000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10369488 + ... + 10485719.

It is an arithmetic number, because the mean of its divisors is an integer number (61314311520).

Almost surely, 2^{1212021210012} is an apocalyptic number.

1212021210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212021210012 is an abundant number, since it is smaller than the sum of its proper divisors (1731065742948).

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

1212021210012 is a wasteful number, since it uses less digits than its factorization.

1212021210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20855410 (or 20855408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212021210012 its reverse (2100121202121), we get a palindrome (3312142412133).

The spelling of 1212021210012 in words is "one trillion, two hundred twelve billion, twenty-one million, two hundred ten thousand, twelve".