1111211111010 has 512 divisors, whose sum is σ = 3796265926656. Its totient is φ = 200683008000.

The previous prime is 1111211110991. The next prime is 1111211111029. The reversal of 1111211111010 is 101111121111.

It is an interprime number because it is at equal distance from previous prime (1111211110991) and next prime (1111211111029).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 34428280 + ... + 34460540.

It is an arithmetic number, because the mean of its divisors is an integer number (7414581888).

Almost surely, 2^{1111211111010} is an apocalyptic number.

1111211111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111211111010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898132963328).

1111211111010 is an abundant number, since it is smaller than the sum of its proper divisors (2685054815646).

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

1111211111010 is a wasteful number, since it uses less digits than its factorization.

1111211111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32370.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 1111211111010 its reverse (101111121111), we get a palindrome (1212322232121).

It can be divided in two parts, 1111211 and 111010, that added together give a palindrome (1222221).

The spelling of 1111211111010 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred eleven thousand, ten".