20102120120212 has 12 divisors (see below), whose sum is σ = 37884764842036. Its totient is φ = 9277901593920.

The previous prime is 20102120120209. The next prime is 20102120120213. The reversal of 20102120120212 is 21202102120102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8286648851716 + 11815471268496 = 2878654^2 + 3437364^2 .

It is a super-2 number, since 2×20102120120212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102120120213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193289616489 + ... + 193289616592.

Almost surely, 2^{20102120120212} is an apocalyptic number.

It is an amenable number.

20102120120212 is a deficient number, since it is larger than the sum of its proper divisors (17782644721824).

20102120120212 is a wasteful number, since it uses less digits than its factorization.

20102120120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386579233098 (or 386579233096 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20102120120212 its reverse (21202102120102), we get a palindrome (41304222240314).

The spelling of 20102120120212 in words is "twenty trillion, one hundred two billion, one hundred twenty million, one hundred twenty thousand, two hundred twelve".