1199212560 has 320 divisors, whose sum is σ = 5084674560. Its totient is φ = 252979200.

The previous prime is 1199212543. The next prime is 1199212577. The reversal of 1199212560 is 652129911.

1199212560 is a `hidden beast` number, since 1 + 1 + 9 + 92 + 1 + 2 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (1199212543) and next prime (1199212577).

It is a super-2 number, since 2×1199212560² = 2876221528123507200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 193510 + ... + 199610.

It is an arithmetic number, because the mean of its divisors is an integer number (15889608).

Almost surely, 2^1199212560 is an apocalyptic number.

1199212560 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 1199212560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2542337280).

1199212560 is an abundant number, since it is smaller than the sum of its proper divisors (3885462000).

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

1199212560 is a wasteful number, since it uses less digits than its factorization.

1199212560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143 (or 6131 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 1199212560 is about 34629.6485688203. The cubic root of 1199212560 is about 1062.4260794709.

The spelling of 1199212560 in words is "one billion, one hundred ninety-nine million, two hundred twelve thousand, five hundred sixty".