1201103231228 has 6 divisors (see below), whose sum is σ = 2101930654656. Its totient is φ = 600551615612.

The previous prime is 1201103231221. The next prime is 1201103231243. The reversal of 1201103231228 is 8221323011021.

It is a junction number, because it is equal to n+sod(n) for n = 1201103231197 and 1201103231206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201103231221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150137903900 + ... + 150137903907.

It is an arithmetic number, because the mean of its divisors is an integer number (350321775776).

Almost surely, 2^{1201103231228} is an apocalyptic number.

It is an amenable number.

1201103231228 is a deficient number, since it is larger than the sum of its proper divisors (900827423428).

1201103231228 is a wasteful number, since it uses less digits than its factorization.

1201103231228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300275807811 (or 300275807809 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 1201103231228 its reverse (8221323011021), we get a palindrome (9422426242249).

The spelling of 1201103231228 in words is "one trillion, two hundred one billion, one hundred three million, two hundred thirty-one thousand, two hundred twenty-eight".