1199812461120 has 784 divisors, whose sum is σ = 5272241667840. Its totient is φ = 253142765568.

The previous prime is 1199812461101. The next prime is 1199812461161. The reversal of 1199812461120 is 211642189911.

It is a happy number.

1199812461120 is a `hidden beast` number, since 1 + 1 + 9 + 9 + 8 + 1 + 2 + 4 + 611 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 21200221 + ... + 21256739.

Almost surely, 2^{1199812461120} is an apocalyptic number.

1199812461120 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 1199812461120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2636120833920).

1199812461120 is an abundant number, since it is smaller than the sum of its proper divisors (4072429206720).

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

1199812461120 is an equidigital number, since it uses as much as digits as its factorization.

1199812461120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56574 (or 56549 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 1199812461120 in words is "one trillion, one hundred ninety-nine billion, eight hundred twelve million, four hundred sixty-one thousand, one hundred twenty".