20111111000212 has 24 divisors (see below), whose sum is σ = 36733102056000. Its totient is φ = 9616140521856.

The previous prime is 20111111000153. The next prime is 20111111000243. The reversal of 20111111000212 is 21200011111102.

It is a happy number.

It is a super-2 number, since 2×20111111000212² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111111000192 and 20111111000201.

It is a congruent number.

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, 24790837 + ... + 25589212.

It is an arithmetic number, because the mean of its divisors is an integer number (1530545919000).

Almost surely, 2^{20111111000212} is an apocalyptic number.

It is an amenable number.

20111111000212 is a deficient number, since it is larger than the sum of its proper divisors (16621991055788).

20111111000212 is a wasteful number, since it uses less digits than its factorization.

20111111000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50384415 (or 50384413 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20111111000212 its reverse (21200011111102), we get a palindrome (41311122111314).

The spelling of 20111111000212 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, two hundred twelve", and thus it is an aban number.