1201115502 has 12 divisors (see below), whose sum is σ = 2602416960. Its totient is φ = 400371828.

The previous prime is 1201115479. The next prime is 1201115507. The reversal of 1201115502 is 2055111021.

1201115502 is a `hidden beast` number, since 1 + 2 + 0 + 111 + 550 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 66728639 = 1201115502 / (1 + 2 + 0 + 1 + 1 + 1 + 5 + 5 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201115507) 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 5 ways as a sum of consecutive naturals, for example, 33364302 + ... + 33364337.

It is an arithmetic number, because the mean of its divisors is an integer number (216868080).

Almost surely, 2^1201115502 is an apocalyptic number.

1201115502 is an abundant number, since it is smaller than the sum of its proper divisors (1401301458).

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

1201115502 is a wasteful number, since it uses less digits than its factorization.

1201115502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66728647 (or 66728644 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1201115502 is about 34657.1132958300. The cubic root of 1201115502 is about 1062.9877443602.

Adding to 1201115502 its reverse (2055111021), we get a palindrome (3256226523).

The spelling of 1201115502 in words is "one billion, two hundred one million, one hundred fifteen thousand, five hundred two".