20012111102 has 16 divisors (see below), whose sum is σ = 31788767520. Its totient is φ = 9416034048.

The previous prime is 20012111099. The next prime is 20012111129. The reversal of 20012111102 is 20111121002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202298 + ... + 284514.

It is an arithmetic number, because the mean of its divisors is an integer number (1986797970).

Almost surely, 2^20012111102 is an apocalyptic number.

20012111102 is a deficient number, since it is larger than the sum of its proper divisors (11776656418).

20012111102 is a wasteful number, since it uses less digits than its factorization.

20012111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89395.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20012111102 its reverse (20111121002), we get a palindrome (40123232104).

The spelling of 20012111102 in words is "twenty billion, twelve million, one hundred eleven thousand, one hundred two".