12001020212 has 6 divisors (see below), whose sum is σ = 21001785378. Its totient is φ = 6000510104.

The previous prime is 12001020191. The next prime is 12001020259. The reversal of 12001020212 is 21202010021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8281728016 + 3719292196 = 91004^2 + 60986^2 .

It is a super-2 number, since 2×12001020212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001020193 and 12001020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500127523 + ... + 1500127530.

It is an arithmetic number, because the mean of its divisors is an integer number (3500297563).

Almost surely, 2^12001020212 is an apocalyptic number.

It is an amenable number.

12001020212 is a deficient number, since it is larger than the sum of its proper divisors (9000765166).

12001020212 is a wasteful number, since it uses less digits than its factorization.

12001020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000255057 (or 3000255055 counting only the distinct ones).

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

Adding to 12001020212 its reverse (21202010021), we get a palindrome (33203030233).

The spelling of 12001020212 in words is "twelve billion, one million, twenty thousand, two hundred twelve".