20101222110212 has 12 divisors (see below), whose sum is σ = 35177176708380. Its totient is φ = 10050600193536.

The previous prime is 20101222110181. The next prime is 20101222110223. The reversal of 20101222110212 is 21201122210102.

It can be written as a sum of positive squares in 2 ways, for example, as 14116672070656 + 5984550039556 = 3757216^2 + 2446334^2 .

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, 2608364 + ... + 6856092.

It is an arithmetic number, because the mean of its divisors is an integer number (2931431392365).

Almost surely, 2^{20101222110212} is an apocalyptic number.

It is an amenable number.

20101222110212 is a deficient number, since it is larger than the sum of its proper divisors (15075954598168).

20101222110212 is a wasteful number, since it uses less digits than its factorization.

20101222110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430790 (or 5430788 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20101222110212 its reverse (21201122210102), we get a palindrome (41302344320314).

The spelling of 20101222110212 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, one hundred ten thousand, two hundred twelve".