20004312212 has 6 divisors (see below), whose sum is σ = 35007546378. Its totient is φ = 10002156104.

The previous prime is 20004312193. The next prime is 20004312227. The reversal of 20004312212 is 21221340002.

It can be written as a sum of positive squares in only one way, i.e., 12187276816 + 7817035396 = 110396^2 + 88414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500539023 + ... + 2500539030.

It is an arithmetic number, because the mean of its divisors is an integer number (5834591063).

Almost surely, 2^20004312212 is an apocalyptic number.

It is an amenable number.

20004312212 is a deficient number, since it is larger than the sum of its proper divisors (15003234166).

20004312212 is a wasteful number, since it uses less digits than its factorization.

20004312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001078057 (or 5001078055 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20004312212 its reverse (21221340002), we get a palindrome (41225652214).

The spelling of 20004312212 in words is "twenty billion, four million, three hundred twelve thousand, two hundred twelve".