10111220000 has 120 divisors (see below), whose sum is σ = 28429099776. Its totient is φ = 3466656000.

The previous prime is 10111219969. The next prime is 10111220039. The reversal of 10111220000 is 2211101.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 10111220000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103889 + ... + 176111.

Almost surely, 2^10111220000 is an apocalyptic number.

10111220000 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 10111220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14214549888).

10111220000 is an abundant number, since it is smaller than the sum of its proper divisors (18317879776).

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

10111220000 is an frugal number, since it uses more digits than its factorization.

10111220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72260 (or 72237 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10111220000 its reverse (2211101), we get a palindrome (10113431101).

The spelling of 10111220000 in words is "ten billion, one hundred eleven million, two hundred twenty thousand".