222500020 has 48 divisors (see below), whose sum is σ = 484098048. Its totient is φ = 85812480.

The previous prime is 222499987. The next prime is 222500023. The reversal of 222500020 is 20005222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222500023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236992 + ... + 237928.

It is an arithmetic number, because the mean of its divisors is an integer number (10085376).

Almost surely, 2^222500020 is an apocalyptic number.

222500020 is a gapful number since it is divisible by the number (20) 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 222500020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242049024).

222500020 is an abundant number, since it is smaller than the sum of its proper divisors (261598028).

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

222500020 is a wasteful number, since it uses less digits than its factorization.

222500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 222500020 is about 14916.4345605778. The cubic root of 222500020 is about 605.9591552091.

Adding to 222500020 its reverse (20005222), we get a palindrome (242505242).

The spelling of 222500020 in words is "two hundred twenty-two million, five hundred thousand, twenty".