20012111201012 has 24 divisors (see below), whose sum is σ = 40391417109120. Its totient is φ = 8497934506080.

The previous prime is 20012111200999. The next prime is 20012111201053. The reversal of 20012111201012 is 21010211121002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3278521064 + ... + 3278527167.

It is an arithmetic number, because the mean of its divisors is an integer number (1682975712880).

Almost surely, 2^{20012111201012} is an apocalyptic number.

It is an amenable number.

20012111201012 is an abundant number, since it is smaller than the sum of its proper divisors (20379305908108).

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

20012111201012 is a wasteful number, since it uses less digits than its factorization.

20012111201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6557048351 (or 6557048349 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20012111201012 its reverse (21010211121002), we get a palindrome (41022322322014).

The spelling of 20012111201012 in words is "twenty trillion, twelve billion, one hundred eleven million, two hundred one thousand, twelve".