1111221012000 has 192 divisors, whose sum is σ = 3971302328448. Its totient is φ = 269386880000.

The previous prime is 1111221011987. The next prime is 1111221012001. The reversal of 1111221012000 is 2101221111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1111221012001) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4077171 + ... + 4341170.

It is an arithmetic number, because the mean of its divisors is an integer number (20683866294).

Almost surely, 2^{1111221012000} is an apocalyptic number.

1111221012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111221012000 is an abundant number, since it is smaller than the sum of its proper divisors (2860081316448).

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

1111221012000 is a wasteful number, since it uses less digits than its factorization.

1111221012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418380 (or 8418362 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1111221012000 its reverse (2101221111), we get a palindrome (1113322233111).

The spelling of 1111221012000 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, twelve thousand".