2121011211103 has 32 divisors (see below), whose sum is σ = 2290339945152. Its totient is φ = 1957048473600.

The previous prime is 2121011211091. The next prime is 2121011211257. The reversal of 2121011211103 is 3011121101212.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121011211103 is a prime.

It is a super-2 number, since 2×2121011211103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121011217103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132051693 + ... + 132067753.

It is an arithmetic number, because the mean of its divisors is an integer number (71573123286).

Almost surely, 2^{2121011211103} is an apocalyptic number.

2121011211103 is a deficient number, since it is larger than the sum of its proper divisors (169328734049).

2121011211103 is a wasteful number, since it uses less digits than its factorization.

2121011211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16875.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 2121011211103 its reverse (3011121101212), we get a palindrome (5132132312315).

The spelling of 2121011211103 in words is "two trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, one hundred three".