20213303212 has 24 divisors (see below), whose sum is σ = 37642298400. Its totient is φ = 9464336640.

The previous prime is 20213303189. The next prime is 20213303239. The reversal of 20213303212 is 21230331202.

It is a self number, because there is not a number n which added to its sum of digits gives 20213303212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733339 + ... + 760402.

It is an arithmetic number, because the mean of its divisors is an integer number (1568429100).

Almost surely, 2^20213303212 is an apocalyptic number.

It is an amenable number.

20213303212 is a deficient number, since it is larger than the sum of its proper divisors (17428995188).

20213303212 is a wasteful number, since it uses less digits than its factorization.

20213303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493961 (or 1493959 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20213303212 its reverse (21230331202), we get a palindrome (41443634414).

The spelling of 20213303212 in words is "twenty billion, two hundred thirteen million, three hundred three thousand, two hundred twelve".