11111021231012 has 24 divisors (see below), whose sum is σ = 19626253952256. Its totient is φ = 5503521395808.

The previous prime is 11111021230937. The next prime is 11111021231039. The reversal of 11111021231012 is 21013212011111.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63283298 + ... + 63458630.

It is an arithmetic number, because the mean of its divisors is an integer number (817760581344).

Almost surely, 2^{11111021231012} is an apocalyptic number.

It is an amenable number.

11111021231012 is a deficient number, since it is larger than the sum of its proper divisors (8515232721244).

11111021231012 is a wasteful number, since it uses less digits than its factorization.

11111021231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323507 (or 323505 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11111021231012 its reverse (21013212011111), we get a palindrome (32124233242123).

The spelling of 11111021231012 in words is "eleven trillion, one hundred eleven billion, twenty-one million, two hundred thirty-one thousand, twelve".