1201557112 has 32 divisors (see below), whose sum is σ = 2710281600. Its totient is φ = 487849824.

The previous prime is 1201557101. The next prime is 1201557113. The reversal of 1201557112 is 2117551021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201557113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563578 + ... + 565705.

It is an arithmetic number, because the mean of its divisors is an integer number (84696300).

Almost surely, 2^1201557112 is an apocalyptic number.

It is an amenable number.

1201557112 is an abundant number, since it is smaller than the sum of its proper divisors (1508724488).

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

1201557112 is a wasteful number, since it uses less digits than its factorization.

1201557112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129315 (or 1129311 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 1201557112 is about 34663.4838410683. The cubic root of 1201557112 is about 1063.1180034119.

The spelling of 1201557112 in words is "one billion, two hundred one million, five hundred fifty-seven thousand, one hundred twelve".