1201128902 has 16 divisors (see below), whose sum is σ = 1868184000. Its totient is φ = 578497920.

The previous prime is 1201128889. The next prime is 1201128923. The reversal of 1201128902 is 2098211021.

It is a congruent number.

It is an unprimeable number.

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, 974 + ... + 49022.

It is an arithmetic number, because the mean of its divisors is an integer number (116761500).

Almost surely, 2^1201128902 is an apocalyptic number.

1201128902 is a deficient number, since it is larger than the sum of its proper divisors (667055098).

1201128902 is a wasteful number, since it uses less digits than its factorization.

1201128902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48511.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1201128902 is about 34657.3066177971. The cubic root of 1201128902 is about 1062.9916973475.

Adding to 1201128902 its reverse (2098211021), we get a palindrome (3299339923).

The spelling of 1201128902 in words is "one billion, two hundred one million, one hundred twenty-eight thousand, nine hundred two".