2121000102103 has 16 divisors (see below), whose sum is σ = 2186776927296. Its totient is φ = 2056265752320.

The previous prime is 2121000102101. The next prime is 2121000102131. The reversal of 2121000102103 is 3012010001212.

It is a cyclic number.

It is not a de Polignac number, because 2121000102103 - 2¹ = 2121000102101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121000102101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2069673 + ... + 2919853.

It is an arithmetic number, because the mean of its divisors is an integer number (136673557956).

Almost surely, 2^{2121000102103} is an apocalyptic number.

2121000102103 is a deficient number, since it is larger than the sum of its proper divisors (65776825193).

2121000102103 is a wasteful number, since it uses less digits than its factorization.

2121000102103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850794.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2121000102103 its reverse (3012010001212), we get a palindrome (5133010103315).

The spelling of 2121000102103 in words is "two trillion, one hundred twenty-one billion, one hundred two thousand, one hundred three".