1212552000 has 336 divisors, whose sum is σ = 4734909504. Its totient is φ = 293760000.

The previous prime is 1212551981. The next prime is 1212552007. The reversal of 1212552000 is 2552121.

1212552000 is a `hidden beast` number, since 121 + 25 + 520 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212552007) 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, 791235 + ... + 792765.

Almost surely, 2^1212552000 is an apocalyptic number.

1212552000 is a gapful number since it is divisible by the number (10) 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 1212552000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2367454752).

1212552000 is an abundant number, since it is smaller than the sum of its proper divisors (3522357504).

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

1212552000 is a wasteful number, since it uses less digits than its factorization.

1212552000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1212552000 is about 34821.7173614398. The cubic root of 1212552000 is about 1066.3508613707.

The spelling of 1212552000 in words is "one billion, two hundred twelve million, five hundred fifty-two thousand".