222135210 has 160 divisors (see below), whose sum is σ = 660508992. Its totient is φ = 53118720.

The previous prime is 222135197. The next prime is 222135211. The reversal of 222135210 is 12531222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222135211) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 953254 + ... + 953486.

Almost surely, 2^222135210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222135210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330254496).

222135210 is an abundant number, since it is smaller than the sum of its proper divisors (438373782).

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

222135210 is a wasteful number, since it uses less digits than its factorization.

222135210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 222135210 is about 14904.2010856000. The cubic root of 222135210 is about 605.6277981065.

Adding to 222135210 its reverse (12531222), we get a palindrome (234666432).

The spelling of 222135210 in words is "two hundred twenty-two million, one hundred thirty-five thousand, two hundred ten".