2123102120212 has 6 divisors (see below), whose sum is σ = 3715428710378. Its totient is φ = 1061551060104.

The previous prime is 2123102120201. The next prime is 2123102120219. The reversal of 2123102120212 is 2120212013212.

It can be written as a sum of positive squares in only one way, i.e., 2119132364176 + 3969756036 = 1455724^2 + 63006^2 .

It is a super-2 number, since 2×2123102120212² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2123102120212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123102120219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265387765023 + ... + 265387765030.

Almost surely, 2^{2123102120212} is an apocalyptic number.

It is an amenable number.

2123102120212 is a deficient number, since it is larger than the sum of its proper divisors (1592326590166).

2123102120212 is a wasteful number, since it uses less digits than its factorization.

2123102120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530775530057 (or 530775530055 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2123102120212 its reverse (2120212013212), we get a palindrome (4243314133424).

The spelling of 2123102120212 in words is "two trillion, one hundred twenty-three billion, one hundred two million, one hundred twenty thousand, two hundred twelve".