201213620 has 24 divisors (see below), whose sum is σ = 425594400. Its totient is φ = 79905312.

The previous prime is 201213619. The next prime is 201213647. The reversal of 201213620 is 26312102.

201213620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33410 + ... + 38969.

It is an arithmetic number, because the mean of its divisors is an integer number (17733100).

Almost surely, 2^201213620 is an apocalyptic number.

201213620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201213620 is an abundant number, since it is smaller than the sum of its proper divisors (224380780).

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

201213620 is a wasteful number, since it uses less digits than its factorization.

201213620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72527 (or 72525 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 201213620 is about 14184.9786746403. The cubic root of 201213620 is about 585.9840451961.

Adding to 201213620 its reverse (26312102), we get a palindrome (227525722).

The spelling of 201213620 in words is "two hundred one million, two hundred thirteen thousand, six hundred twenty".