12100020212 has 18 divisors (see below), whose sum is σ = 24632184402. Its totient is φ = 5185722864.

The previous prime is 12100020203. The next prime is 12100020253. The reversal of 12100020212 is 21202000121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11744923876 + 355096336 = 108374^2 + 18844^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12100020193 and 12100020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30867203 + ... + 30867594.

It is an arithmetic number, because the mean of its divisors is an integer number (1368454689).

Almost surely, 2^12100020212 is an apocalyptic number.

It is an amenable number.

12100020212 is an abundant number, since it is smaller than the sum of its proper divisors (12532164190).

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

12100020212 is a wasteful number, since it uses less digits than its factorization.

12100020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61734815 (or 61734806 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12100020212 its reverse (21202000121), we get a palindrome (33302020333).

The spelling of 12100020212 in words is "twelve billion, one hundred million, twenty thousand, two hundred twelve".