1212013200 has 180 divisors, whose sum is σ = 4015580784. Its totient is φ = 312480000.

The previous prime is 1212013189. The next prime is 1212013217. The reversal of 1212013200 is 23102121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1152675 + ... + 1153725.

Almost surely, 2^1212013200 is an apocalyptic number.

1212013200 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 1212013200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007790392).

1212013200 is an abundant number, since it is smaller than the sum of its proper divisors (2803567584).

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

1212013200 is a wasteful number, since it uses less digits than its factorization.

1212013200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1212013200 is about 34813.9799505888. The cubic root of 1212013200 is about 1066.1928928970.

Adding to 1212013200 its reverse (23102121), we get a palindrome (1235115321).

The spelling of 1212013200 in words is "one billion, two hundred twelve million, thirteen thousand, two hundred".