20213111102012 has 12 divisors (see below), whose sum is σ = 35474299572600. Its totient is φ = 10077596938416.

The previous prime is 20213111102011. The next prime is 20213111102039. The reversal of 20213111102012 is 21020111131202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213111102011) 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, 7239651578 + ... + 7239654369.

It is an arithmetic number, because the mean of its divisors is an integer number (2956191631050).

Almost surely, 2^{20213111102012} is an apocalyptic number.

It is an amenable number.

20213111102012 is a deficient number, since it is larger than the sum of its proper divisors (15261188470588).

20213111102012 is a wasteful number, since it uses less digits than its factorization.

20213111102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14479306300 (or 14479306298 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20213111102012 its reverse (21020111131202), we get a palindrome (41233222233214).

The spelling of 20213111102012 in words is "twenty trillion, two hundred thirteen billion, one hundred eleven million, one hundred two thousand, twelve".