20120265212 has 12 divisors (see below), whose sum is σ = 35230493760. Its totient is φ = 10054409856.

The previous prime is 20120265211. The next prime is 20120265223. The reversal of 20120265212 is 21256202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120265211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1422773 + ... + 1436844.

It is an arithmetic number, because the mean of its divisors is an integer number (2935874480).

Almost surely, 2^20120265212 is an apocalyptic number.

It is an amenable number.

20120265212 is a deficient number, since it is larger than the sum of its proper divisors (15110228548).

20120265212 is a wasteful number, since it uses less digits than its factorization.

20120265212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861380 (or 2861378 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20120265212 its reverse (21256202102), we get a palindrome (41376467314).

The spelling of 20120265212 in words is "twenty billion, one hundred twenty million, two hundred sixty-five thousand, two hundred twelve".