213102220 has 24 divisors (see below), whose sum is σ = 448749504. Its totient is φ = 85005696.

The previous prime is 213102209. The next prime is 213102247. The reversal of 213102220 is 22201312.

It is a self number, because there is not a number n which added to its sum of digits gives 213102220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7177 + ... + 21856.

It is an arithmetic number, because the mean of its divisors is an integer number (18697896).

Almost surely, 2^213102220 is an apocalyptic number.

213102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213102220 is an abundant number, since it is smaller than the sum of its proper divisors (235647284).

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

213102220 is a wasteful number, since it uses less digits than its factorization.

213102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29409 (or 29407 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 213102220 is about 14598.0210987654. The cubic root of 213102220 is about 597.3047814941.

Adding to 213102220 its reverse (22201312), we get a palindrome (235303532).

The spelling of 213102220 in words is "two hundred thirteen million, one hundred two thousand, two hundred twenty".