1103031221012 has 24 divisors (see below), whose sum is σ = 2206090246080. Its totient is φ = 472721708160.

The previous prime is 1103031221011. The next prime is 1103031221027. The reversal of 1103031221012 is 2101221303011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103031221011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2577212 + ... + 2974572.

It is an arithmetic number, because the mean of its divisors is an integer number (91920426920).

Almost surely, 2^{1103031221012} is an apocalyptic number.

It is an amenable number.

1103031221012 is an abundant number, since it is smaller than the sum of its proper divisors (1103059025068).

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

1103031221012 is a wasteful number, since it uses less digits than its factorization.

1103031221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496511 (or 496509 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1103031221012 its reverse (2101221303011), we get a palindrome (3204252524023).

The spelling of 1103031221012 in words is "one trillion, one hundred three billion, thirty-one million, two hundred twenty-one thousand, twelve".