20100111212102 has 4 divisors (see below), whose sum is σ = 30150166818156. Its totient is φ = 10050055606050.

The previous prime is 20100111212059. The next prime is 20100111212141. The reversal of 20100111212102 is 20121211100102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025027803024 + ... + 5025027803027.

It is an arithmetic number, because the mean of its divisors is an integer number (7537541704539).

Almost surely, 2^{20100111212102} is an apocalyptic number.

20100111212102 is a deficient number, since it is larger than the sum of its proper divisors (10050055606054).

20100111212102 is a wasteful number, since it uses less digits than its factorization.

20100111212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050055606053.

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

Adding to 20100111212102 its reverse (20121211100102), we get a palindrome (40221322312204).

The spelling of 20100111212102 in words is "twenty trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, one hundred two".