1201775112 has 24 divisors (see below), whose sum is σ = 3254807790. Its totient is φ = 400591680.

The previous prime is 1201775111. The next prime is 1201775123. The reversal of 1201775112 is 2115771021.

It can be written as a sum of positive squares in only one way, i.e., 619711236 + 582063876 = 24894^2 + 24126^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1201775112² = 2888526839645225088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201775111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8345589 + ... + 8345732.

Almost surely, 2^1201775112 is an apocalyptic number.

1201775112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201775112 is an abundant number, since it is smaller than the sum of its proper divisors (2053032678).

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

1201775112 is a wasteful number, since it uses less digits than its factorization.

1201775112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16691333 (or 16691326 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The square root of 1201775112 is about 34666.6282179274. The cubic root of 1201775112 is about 1063.1822937975.

The spelling of 1201775112 in words is "one billion, two hundred one million, seven hundred seventy-five thousand, one hundred twelve".