1111211110000 has 400 divisors, whose sum is σ = 2824500970368. Its totient is φ = 423014400000.

The previous prime is 1111211109979. The next prime is 1111211110013. The reversal of 1111211110000 is 111121111.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4100409865 + ... + 4100410135.

Almost surely, 2^{1111211110000} is an apocalyptic number.

1111211110000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111211110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412250485184).

1111211110000 is an abundant number, since it is smaller than the sum of its proper divisors (1713289860368).

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

1111211110000 is a wasteful number, since it uses less digits than its factorization.

1111211110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1111211110000 its reverse (111121111), we get a palindrome (1111322231111).

1111211110000 divided by its reverse (111121111) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 11112111 and 10000, that added together give a palindrome (11122111).

The spelling of 1111211110000 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred ten thousand".