1123201331988 has 48 divisors (see below), whose sum is σ = 2635394952960. Its totient is φ = 372317755264.

The previous prime is 1123201331981. The next prime is 1123201332031. The reversal of 1123201331988 is 8891331023211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123201331981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4761778 + ... + 4992086.

It is an arithmetic number, because the mean of its divisors is an integer number (54904061520).

Almost surely, 2^{1123201331988} is an apocalyptic number.

It is an amenable number.

1123201331988 is an abundant number, since it is smaller than the sum of its proper divisors (1512193620972).

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

1123201331988 is a wasteful number, since it uses less digits than its factorization.

1123201331988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232576 (or 232574 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 1123201331988 in words is "one trillion, one hundred twenty-three billion, two hundred one million, three hundred thirty-one thousand, nine hundred eighty-eight".