1111021111002 has 256 divisors, whose sum is σ = 2542766432256. Its totient is φ = 320785920000.

The previous prime is 1111021110943. The next prime is 1111021111007. The reversal of 1111021111002 is 2001111201111.

It is not an unprimeable number, because it can be changed into a prime (1111021111007) 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 127 ways as a sum of consecutive naturals, for example, 7076567508 + ... + 7076567664.

It is an arithmetic number, because the mean of its divisors is an integer number (9932681376).

Almost surely, 2^{1111021111002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111021111002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271383216128).

1111021111002 is an abundant number, since it is smaller than the sum of its proper divisors (1431745321254).

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

1111021111002 is a wasteful number, since it uses less digits than its factorization.

1111021111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1111021111002 its reverse (2001111201111), we get a palindrome (3112132312113).

It can be divided in two parts, 11110 and 21111002, that added together give a palindrome (21122112).

The spelling of 1111021111002 in words is "one trillion, one hundred eleven billion, twenty-one million, one hundred eleven thousand, two".