20213203212 has 96 divisors (see below), whose sum is σ = 52708743360. Its totient is φ = 6698764800.

The previous prime is 20213203211. The next prime is 20213203259. The reversal of 20213203212 is 21230231202.

20213203212 is a `hidden beast` number, since 2 + 0 + 21 + 320 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20213203211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23696178 + ... + 23697030.

It is an arithmetic number, because the mean of its divisors is an integer number (549049410).

Almost surely, 2^20213203212 is an apocalyptic number.

It is an amenable number.

20213203212 is an abundant number, since it is smaller than the sum of its proper divisors (32495540148).

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

20213203212 is a wasteful number, since it uses less digits than its factorization.

20213203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20213203212 its reverse (21230231202), we get a palindrome (41443434414).

The spelling of 20213203212 in words is "twenty billion, two hundred thirteen million, two hundred three thousand, two hundred twelve".