2100111200102 has 4 divisors (see below), whose sum is σ = 3150166800156.
Its totient is φ = 1050055600050.
The previous prime is 2100111200101. The next prime is 2100111200111. The reversal of 2100111200102 is 2010021110012.
Adding to 2100111200102 its reverse (2010021110012), we get a palindrome (4110132310114).
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2100111200101) by changing a digit.
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 as a sum of consecutive naturals, namely, 525027800024 + ... + 525027800027.
It is an arithmetic number, because the mean of its divisors is an integer number (787541700039).
Almost surely, 22100111200102 is an apocalyptic number.
2100111200102 is a deficient number, since it is larger than the sum of its proper divisors (1050055600054).
2100111200102 is a wasteful number, since it uses less digits than its factorization.
2100111200102 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1050055600053.
The product of its (nonzero) digits is 8, while the sum is 11.
The spelling of 2100111200102 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred thousand, one hundred two".