20120111110212 has 24 divisors (see below), whose sum is σ = 47074846713216. Its totient is φ = 6688429304928.

The previous prime is 20120111110139. The next prime is 20120111110217. The reversal of 20120111110212 is 21201111102102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20120111110191 and 20120111110200.

It is not an unprimeable number, because it can be changed into a prime (20120111110217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2284295223 + ... + 2284304030.

It is an arithmetic number, because the mean of its divisors is an integer number (1961451946384).

Almost surely, 2^{20120111110212} is an apocalyptic number.

It is an amenable number.

20120111110212 is an abundant number, since it is smaller than the sum of its proper divisors (26954735603004).

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

20120111110212 is a wasteful number, since it uses less digits than its factorization.

20120111110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568599627 (or 4568599625 counting only the distinct ones).

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

Adding to 20120111110212 its reverse (21201111102102), we get a palindrome (41321222212314).

The spelling of 20120111110212 in words is "twenty trillion, one hundred twenty billion, one hundred eleven million, one hundred ten thousand, two hundred twelve".