201210220 has 24 divisors (see below), whose sum is σ = 424738944. Its totient is φ = 80065536.

The previous prime is 201210211. The next prime is 201210223. The reversal of 201210220 is 22012102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201210197 and 201210206.

It is not an unprimeable number, because it can be changed into a prime (201210223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22204 + ... + 29923.

It is an arithmetic number, because the mean of its divisors is an integer number (17697456).

Almost surely, 2^201210220 is an apocalyptic number.

201210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201210220 is an abundant number, since it is smaller than the sum of its proper divisors (223528724).

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

201210220 is a wasteful number, since it uses less digits than its factorization.

201210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52329 (or 52327 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 201210220 is about 14184.8588290473. The cubic root of 201210220 is about 585.9807446293.

Adding to 201210220 its reverse (22012102), we get a palindrome (223222322).

The spelling of 201210220 in words is "two hundred one million, two hundred ten thousand, two hundred twenty".