212321021330 has 32 divisors (see below), whose sum is σ = 421049233728. Its totient is φ = 76443208000.

The previous prime is 212321021327. The next prime is 212321021357. The reversal of 212321021330 is 33120123212.

It is a super-2 number, since 2×212321021330² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9544292 + ... + 9566511.

It is an arithmetic number, because the mean of its divisors is an integer number (13157788554).

Almost surely, 2^212321021330 is an apocalyptic number.

212321021330 is a deficient number, since it is larger than the sum of its proper divisors (208728212398).

212321021330 is a wasteful number, since it uses less digits than its factorization.

212321021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19110922.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212321021330 its reverse (33120123212), we get a palindrome (245441144542).

The spelling of 212321021330 in words is "two hundred twelve billion, three hundred twenty-one million, twenty-one thousand, three hundred thirty".