20111111200212 has 48 divisors (see below), whose sum is σ = 47064213266112. Its totient is φ = 6683950938880.

The previous prime is 20111111200153. The next prime is 20111111200237. The reversal of 20111111200212 is 21200211111102.

It is a happy number.

It is a super-2 number, since 2×20111111200212² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111111200191 and 20111111200200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67528912 + ... + 67826072.

It is an arithmetic number, because the mean of its divisors is an integer number (980504443044).

Almost surely, 2^{20111111200212} is an apocalyptic number.

It is an amenable number.

20111111200212 is an abundant number, since it is smaller than the sum of its proper divisors (26953102065900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111111200212 is a wasteful number, since it uses less digits than its factorization.

20111111200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313768 (or 313766 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111111200212 its reverse (21200211111102), we get a palindrome (41311322311314).

The spelling of 20111111200212 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, two hundred thousand, two hundred twelve".