2170220052 has 384 divisors, whose sum is σ = 7378882560. Its totient is φ = 477757440.

The previous prime is 2170220047. The next prime is 2170220053. The reversal of 2170220052 is 2500220712.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170220053) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8444308 + ... + 8444564.

It is an arithmetic number, because the mean of its divisors is an integer number (19215840).

Almost surely, 2^2170220052 is an apocalyptic number.

2170220052 is a gapful number since it is divisible by the number (22) 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 2170220052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3689441280).

2170220052 is an abundant number, since it is smaller than the sum of its proper divisors (5208662508).

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

2170220052 is a wasteful number, since it uses less digits than its factorization.

2170220052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2170220052 is about 46585.6206570225. The cubic root of 2170220052 is about 1294.6963509430.

Adding to 2170220052 its reverse (2500220712), we get a palindrome (4670440764).

It can be divided in two parts, 2170 and 220052, that added together give a palindrome (222222).

The spelling of 2170220052 in words is "two billion, one hundred seventy million, two hundred twenty thousand, fifty-two".