213113221340 has 24 divisors (see below), whose sum is σ = 447631184112. Its totient is φ = 85227494400.

The previous prime is 213113221339. The next prime is 213113221369. The reversal of 213113221340 is 43122311312.

213113221340 is digitally balanced in base 2, 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013714 + ... + 1205753.

It is an arithmetic number, because the mean of its divisors is an integer number (18651299338).

Almost surely, 2^213113221340 is an apocalyptic number.

213113221340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213113221340 is an abundant number, since it is smaller than the sum of its proper divisors (234517962772).

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

213113221340 is a wasteful number, since it uses less digits than its factorization.

213113221340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224277 (or 2224275 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 213113221340 its reverse (43122311312), we get a palindrome (256235532652).

The spelling of 213113221340 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred twenty-one thousand, three hundred forty".