213204214201240 has 32 divisors (see below), whose sum is σ = 479709899887680. Its totient is φ = 85281611380992.

The previous prime is 213204214201171. The next prime is 213204214201247. The reversal of 213204214201240 is 42102412402312.

It is a junction number, because it is equal to n+sod(n) for n = 213204214201199 and 213204214201208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213204214201247) 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, 81716572 + ... + 84285268.

It is an arithmetic number, because the mean of its divisors is an integer number (14990934371490).

Almost surely, 2^{213204214201240} is an apocalyptic number.

213204214201240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213204214201240 is an abundant number, since it is smaller than the sum of its proper divisors (266505685686440).

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

213204214201240 is a wasteful number, since it uses less digits than its factorization.

213204214201240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643731 (or 4643727 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 213204214201240 its reverse (42102412402312), we get a palindrome (255306626603552).

The spelling of 213204214201240 in words is "two hundred thirteen trillion, two hundred four billion, two hundred fourteen million, two hundred one thousand, two hundred forty".