209012022 has 32 divisors (see below), whose sum is σ = 465372000. Its totient is φ = 69535584.

The previous prime is 209012021. The next prime is 209012033. The reversal of 209012022 is 220210902.

209012022 is digitally balanced in base 2 and base 3, because in such bases 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 a junction number, because it is equal to n+sod(n) for n = 209011986 and 209012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209012021) 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, 26604 + ... + 33552.

It is an arithmetic number, because the mean of its divisors is an integer number (14542875).

Almost surely, 2^209012022 is an apocalyptic number.

209012022 is an abundant number, since it is smaller than the sum of its proper divisors (256359978).

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

209012022 is a wasteful number, since it uses less digits than its factorization.

209012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517 (or 7511 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 209012022 is about 14457.2480783861. The cubic root of 209012022 is about 593.4585924860.

Adding to 209012022 its reverse (220210902), we get a palindrome (429222924).

The spelling of 209012022 in words is "two hundred nine million, twelve thousand, twenty-two".