20111002122212 has 24 divisors (see below), whose sum is σ = 37269486094680. Its totient is φ = 9462735687680.

The previous prime is 20111002122179. The next prime is 20111002122223. The reversal of 20111002122212 is 21222120011102.

20111002122212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2875418838436 + 17235583283776 = 1695706^2 + 4151576^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19258037 + ... + 20275452.

It is an arithmetic number, because the mean of its divisors is an integer number (1552895253945).

Almost surely, 2^{20111002122212} is an apocalyptic number.

It is an amenable number.

20111002122212 is a deficient number, since it is larger than the sum of its proper divisors (17158483972468).

20111002122212 is a wasteful number, since it uses less digits than its factorization.

20111002122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39540991 (or 39540989 counting only the distinct ones).

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

Adding to 20111002122212 its reverse (21222120011102), we get a palindrome (41333122133314).

The spelling of 20111002122212 in words is "twenty trillion, one hundred eleven billion, two million, one hundred twenty-two thousand, two hundred twelve".