2012111220212 has 6 divisors (see below), whose sum is σ = 3521194635378. Its totient is φ = 1006055610104.

The previous prime is 2012111220211. The next prime is 2012111220233. The reversal of 2012111220212 is 2120221112102.

It can be written as a sum of positive squares in only one way, i.e., 1787317652836 + 224793567376 = 1336906^2 + 474124^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012111220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251513902523 + ... + 251513902530.

It is an arithmetic number, because the mean of its divisors is an integer number (586865772563).

Almost surely, 2^{2012111220212} is an apocalyptic number.

It is an amenable number.

2012111220212 is a deficient number, since it is larger than the sum of its proper divisors (1509083415166).

2012111220212 is a wasteful number, since it uses less digits than its factorization.

2012111220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503027805057 (or 503027805055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2012111220212 its reverse (2120221112102), we get a palindrome (4132332332314).

The spelling of 2012111220212 in words is "two trillion, twelve billion, one hundred eleven million, two hundred twenty thousand, two hundred twelve".