212203026 has 72 divisors (see below), whose sum is σ = 546324480. Its totient is φ = 59327856.

The previous prime is 212203021. The next prime is 212203087. The reversal of 212203026 is 620302212.

212203026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (212203021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38895 + ... + 44013.

It is an arithmetic number, because the mean of its divisors is an integer number (7587840).

Almost surely, 2^212203026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212203026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273162240).

212203026 is an abundant number, since it is smaller than the sum of its proper divisors (334121454).

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

212203026 is a wasteful number, since it uses less digits than its factorization.

212203026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5188 (or 5178 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212203026 is about 14567.1900516194. The cubic root of 212203026 is about 596.4634793240.

Adding to 212203026 its reverse (620302212), we get a palindrome (832505238).

The spelling of 212203026 in words is "two hundred twelve million, two hundred three thousand, twenty-six".