20201211222212 has 6 divisors (see below), whose sum is σ = 35352119638878. Its totient is φ = 10100605611104.

The previous prime is 20201211222193. The next prime is 20201211222251. The reversal of 20201211222212 is 21222211210202.

It can be written as a sum of positive squares in only one way, i.e., 18595983037636 + 1605228184576 = 4312306^2 + 1266976^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525151402773 + ... + 2525151402780.

It is an arithmetic number, because the mean of its divisors is an integer number (5892019939813).

Almost surely, 2^{20201211222212} is an apocalyptic number.

It is an amenable number.

20201211222212 is a deficient number, since it is larger than the sum of its proper divisors (15150908416666).

20201211222212 is a wasteful number, since it uses less digits than its factorization.

20201211222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050302805557 (or 5050302805555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20201211222212 its reverse (21222211210202), we get a palindrome (41423422432414).

The spelling of 20201211222212 in words is "twenty trillion, two hundred one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twelve".