212021111330 has 64 divisors (see below), whose sum is σ = 438967330560. Its totient is φ = 72226162944.

The previous prime is 212021111329. The next prime is 212021111339. The reversal of 212021111330 is 33111120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021111299 and 212021111308.

It is not an unprimeable number, because it can be changed into a prime (212021111339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7008497 + ... + 7038683.

It is an arithmetic number, because the mean of its divisors is an integer number (6858864540).

Almost surely, 2^212021111330 is an apocalyptic number.

212021111330 is an abundant number, since it is smaller than the sum of its proper divisors (226946219230).

212021111330 is a wasteful number, since it uses less digits than its factorization.

212021111330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30843.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212021111330 its reverse (33111120212), we get a palindrome (245132231542).

The spelling of 212021111330 in words is "two hundred twelve billion, twenty-one million, one hundred eleven thousand, three hundred thirty".