213121332330 has 16 divisors (see below), whose sum is σ = 511491197664. Its totient is φ = 56832355280.

The previous prime is 213121332287. The next prime is 213121332349. The reversal of 213121332330 is 33233121312.

213121332330 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213121332330² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213121332330.

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, 3552022176 + ... + 3552022235.

It is an arithmetic number, because the mean of its divisors is an integer number (31968199854).

Almost surely, 2^213121332330 is an apocalyptic number.

213121332330 is an abundant number, since it is smaller than the sum of its proper divisors (298369865334).

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

213121332330 is a wasteful number, since it uses less digits than its factorization.

213121332330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7104044421.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 213121332330 its reverse (33233121312), we get a palindrome (246354453642).

The spelling of 213121332330 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred thirty-two thousand, three hundred thirty".