1212040368 has 320 divisors, whose sum is σ = 4399718400. Its totient is φ = 310314240.

The previous prime is 1212040367. The next prime is 1212040397. The reversal of 1212040368 is 8630402121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1212040367) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2760693 + ... + 2761131.

It is an arithmetic number, because the mean of its divisors is an integer number (13749120).

Almost surely, 2^1212040368 is an apocalyptic number.

1212040368 is a gapful number since it is divisible by the number (18) 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 1212040368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2199859200).

1212040368 is an abundant number, since it is smaller than the sum of its proper divisors (3187678032).

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

1212040368 is a wasteful number, since it uses less digits than its factorization.

1212040368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1212040368 is about 34814.3701364824. The cubic root of 1212040368 is about 1066.2008592877.

Adding to 1212040368 its reverse (8630402121), we get a palindrome (9842442489).

The spelling of 1212040368 in words is "one billion, two hundred twelve million, forty thousand, three hundred sixty-eight".