250021122 has 64 divisors (see below), whose sum is σ = 562826880. Its totient is φ = 73511424.

The previous prime is 250021103. The next prime is 250021129. The reversal of 250021122 is 221120052.

It is a super-2 number, since 2×250021122² = 125021122892277768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (250021129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241518 + ... + 242550.

It is an arithmetic number, because the mean of its divisors is an integer number (8794170).

Almost surely, 2^250021122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281413440).

250021122 is an abundant number, since it is smaller than the sum of its proper divisors (312805758).

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

250021122 is a wasteful number, since it uses less digits than its factorization.

250021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 250021122 is about 15812.0562230217. The cubic root of 250021122 is about 629.9782658161.

Adding to 250021122 its reverse (221120052), we get a palindrome (471141174).

The spelling of 250021122 in words is "two hundred fifty million, twenty-one thousand, one hundred twenty-two".