1212952988412 has 144 divisors (see below), whose sum is σ = 3500517820800. Its totient is φ = 364189037760.

The previous prime is 1212952988383. The next prime is 1212952988417. The reversal of 1212952988412 is 2148892592121.

1212952988412 is a `hidden beast` number, since 1 + 2 + 1 + 29 + 529 + 8 + 84 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212952988417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 645039 + ... + 1685817.

Almost surely, 2^{1212952988412} is an apocalyptic number.

1212952988412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212952988412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750258910400).

1212952988412 is an abundant number, since it is smaller than the sum of its proper divisors (2287564832388).

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

1212952988412 is a wasteful number, since it uses less digits than its factorization.

1212952988412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040918 (or 1040904 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 1212952988412 in words is "one trillion, two hundred twelve billion, nine hundred fifty-two million, nine hundred eighty-eight thousand, four hundred twelve".