111206420250 has 128 divisors (see below), whose sum is σ = 289868267520. Its totient is φ = 28343304000.

The previous prime is 111206420219. The next prime is 111206420257. The reversal of 111206420250 is 52024602111.

It is a super-2 number, since 2×111206420250² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111206420250.

It is not an unprimeable number, because it can be changed into a prime (111206420257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40898391 + ... + 40901109.

It is an arithmetic number, because the mean of its divisors is an integer number (2264595840).

Almost surely, 2^111206420250 is an apocalyptic number.

111206420250 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 111206420250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144934133760).

111206420250 is an abundant number, since it is smaller than the sum of its proper divisors (178661847270).

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

111206420250 is a wasteful number, since it uses less digits than its factorization.

111206420250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 111206420250 in words is "one hundred eleven billion, two hundred six million, four hundred twenty thousand, two hundred fifty".