20121102112212 has 30 divisors (see below), whose sum is σ = 52600535460858. Its totient is φ = 6707034037296.

The previous prime is 20121102112183. The next prime is 20121102112217. The reversal of 20121102112212 is 21221120112102.

20121102112212 is a `hidden beast` number, since 20 + 1 + 211 + 0 + 211 + 221 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13896895445316 + 6224206666896 = 3727854^2 + 2494836^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121102112217) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31051083183 + ... + 31051083830.

Almost surely, 2^{20121102112212} is an apocalyptic number.

It is an amenable number.

20121102112212 is an abundant number, since it is smaller than the sum of its proper divisors (32479433348646).

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

20121102112212 is a wasteful number, since it uses less digits than its factorization.

20121102112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62102167029 (or 62102167018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20121102112212 its reverse (21221120112102), we get a palindrome (41342222224314).

The spelling of 20121102112212 in words is "twenty trillion, one hundred twenty-one billion, one hundred two million, one hundred twelve thousand, two hundred twelve".