213201020 has 12 divisors (see below), whose sum is σ = 447722184. Its totient is φ = 85280400.

The previous prime is 213201017. The next prime is 213201041. The reversal of 213201020 is 20102312.

It is a happy number.

213201020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213200992 and 213201010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330006 + ... + 5330045.

It is an arithmetic number, because the mean of its divisors is an integer number (37310182).

Almost surely, 2^213201020 is an apocalyptic number.

213201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213201020 is an abundant number, since it is smaller than the sum of its proper divisors (234521164).

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

213201020 is a wasteful number, since it uses less digits than its factorization.

213201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10660060 (or 10660058 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 213201020 is about 14601.4047269432. The cubic root of 213201020 is about 597.3970761600.

Adding to 213201020 its reverse (20102312), we get a palindrome (233303332).

The spelling of 213201020 in words is "two hundred thirteen million, two hundred one thousand, twenty".