20012112212 has 6 divisors (see below), whose sum is σ = 35021196378. Its totient is φ = 10006056104.

The previous prime is 20012112209. The next prime is 20012112223. The reversal of 20012112212 is 21221121002.

It can be written as a sum of positive squares in only one way, i.e., 11563561156 + 8448551056 = 107534^2 + 91916^2 .

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, 2501514023 + ... + 2501514030.

It is an arithmetic number, because the mean of its divisors is an integer number (5836866063).

Almost surely, 2^20012112212 is an apocalyptic number.

It is an amenable number.

20012112212 is a deficient number, since it is larger than the sum of its proper divisors (15009084166).

20012112212 is a wasteful number, since it uses less digits than its factorization.

20012112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003028057 (or 5003028055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012112212 its reverse (21221121002), we get a palindrome (41233233214).

The spelling of 20012112212 in words is "twenty billion, twelve million, one hundred twelve thousand, two hundred twelve".