1212241200 has 60 divisors (see below), whose sum is σ = 3883216488. Its totient is φ = 323264000.

The previous prime is 1212241171. The next prime is 1212241201. The reversal of 1212241200 is 21422121.

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1212241200.

It is not an unprimeable number, because it can be changed into a prime (1212241201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503901 + ... + 506300.

Almost surely, 2^1212241200 is an apocalyptic number.

1212241200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212241200 is an abundant number, since it is smaller than the sum of its proper divisors (2670975288).

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

1212241200 is a wasteful number, since it uses less digits than its factorization.

1212241200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010222 (or 1010211 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1212241200 is about 34817.2543432132. The cubic root of 1212241200 is about 1066.2597449572.

Adding to 1212241200 its reverse (21422121), we get a palindrome (1233663321).

It can be divided in two parts, 12 and 12241200, that multiplied together give a square (146894400 = 12120²).

The spelling of 1212241200 in words is "one billion, two hundred twelve million, two hundred forty-one thousand, two hundred".