210222040 has 64 divisors (see below), whose sum is σ = 541857600. Its totient is φ = 71904768.

The previous prime is 210222031. The next prime is 210222053. The reversal of 210222040 is 40222012.

It is a super-2 number, since 2×210222040² = 88386612203523200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210222040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189006 + ... + 190114.

It is an arithmetic number, because the mean of its divisors is an integer number (8466525).

Almost surely, 2^210222040 is an apocalyptic number.

210222040 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 210222040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270928800).

210222040 is an abundant number, since it is smaller than the sum of its proper divisors (331635560).

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

210222040 is a wasteful number, since it uses less digits than its factorization.

210222040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 210222040 is about 14499.0358300130. The cubic root of 210222040 is about 594.6016117130.

Adding to 210222040 its reverse (40222012), we get a palindrome (250444052).

It can be divided in two parts, 2102 and 22040, that added together give a palindrome (24142).

The spelling of 210222040 in words is "two hundred ten million, two hundred twenty-two thousand, forty".