1201203864000 has 896 divisors, whose sum is σ = 5301881395200. Its totient is φ = 260104089600.

The previous prime is 1201203863999. The next prime is 1201203864001. The reversal of 1201203864000 is 4683021021.

1201203864000 is a `hidden beast` number, since 1 + 2 + 0 + 12 + 0 + 3 + 8 + 640 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1201203863999) and next prime (1201203864001).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201203864001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28707094 + ... + 28748906.

Almost surely, 2^{1201203864000} is an apocalyptic number.

1201203864000 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 1201203864000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650940697600).

1201203864000 is an abundant number, since it is smaller than the sum of its proper divisors (4100677531200).

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

1201203864000 is a wasteful number, since it uses less digits than its factorization.

1201203864000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41875 (or 41849 counting only the distinct ones).

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

Adding to 1201203864000 its reverse (4683021021), we get a palindrome (1205886885021).

The spelling of 1201203864000 in words is "one trillion, two hundred one billion, two hundred three million, eight hundred sixty-four thousand".