20120220102012 has 12 divisors (see below), whose sum is σ = 46947180238056. Its totient is φ = 6706740034000.

The previous prime is 20120220102011. The next prime is 20120220102023. The reversal of 20120220102012 is 21020102202102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20120220101982 and 20120220102000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120220102011) 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, 838342504239 + ... + 838342504262.

It is an arithmetic number, because the mean of its divisors is an integer number (3912265019838).

Almost surely, 2^{20120220102012} is an apocalyptic number.

It is an amenable number.

20120220102012 is an abundant number, since it is smaller than the sum of its proper divisors (26826960136044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20120220102012 is a wasteful number, since it uses less digits than its factorization.

20120220102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676685008508 (or 1676685008506 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20120220102012 its reverse (21020102202102), we get a palindrome (41140322304114).

The spelling of 20120220102012 in words is "twenty trillion, one hundred twenty billion, two hundred twenty million, one hundred two thousand, twelve".