20331102212 has 12 divisors (see below), whose sum is σ = 35580758220. Its totient is φ = 10165171296.

The previous prime is 20331102199. The next prime is 20331102251. The reversal of 20331102212 is 21220113302.

It can be written as a sum of positive squares in 2 ways, for example, as 13171234756 + 7159867456 = 114766^2 + 84616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50114 + ... + 207782.

It is an arithmetic number, because the mean of its divisors is an integer number (2965063185).

Almost surely, 2^20331102212 is an apocalyptic number.

It is an amenable number.

20331102212 is a deficient number, since it is larger than the sum of its proper divisors (15249656008).

20331102212 is a wasteful number, since it uses less digits than its factorization.

20331102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189910 (or 189908 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20331102212 its reverse (21220113302), we get a palindrome (41551215514).

The spelling of 20331102212 in words is "twenty billion, three hundred thirty-one million, one hundred two thousand, two hundred twelve".