1212168672 has 192 divisors, whose sum is σ = 4154008320. Its totient is φ = 339033600.

The previous prime is 1212168647. The next prime is 1212168673. The reversal of 1212168672 is 2768612121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212168673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118647 + ... + 128457.

It is an arithmetic number, because the mean of its divisors is an integer number (21635460).

Almost surely, 2^1212168672 is an apocalyptic number.

1212168672 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 1212168672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2077004160).

1212168672 is an abundant number, since it is smaller than the sum of its proper divisors (2941839648).

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

1212168672 is a wasteful number, since it uses less digits than its factorization.

1212168672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9854 (or 9840 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 1212168672 is about 34816.2127750851. The cubic root of 1212168672 is about 1066.2384798742.

The spelling of 1212168672 in words is "one billion, two hundred twelve million, one hundred sixty-eight thousand, six hundred seventy-two".