2102121111103 has 48 divisors (see below), whose sum is σ = 2330079998400. Its totient is φ = 1884986611200.

The previous prime is 2102121111073. The next prime is 2102121111137. The reversal of 2102121111103 is 3011111212012.

It is a happy number.

It is not a de Polignac number, because 2102121111103 - 2¹⁷ = 2102120980031 is a prime.

It is a super-2 number, since 2×2102121111103² (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 (2102121111193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2560439433 + ... + 2560440253.

It is an arithmetic number, because the mean of its divisors is an integer number (48543333300).

Almost surely, 2^{2102121111103} is an apocalyptic number.

2102121111103 is a deficient number, since it is larger than the sum of its proper divisors (227958887297).

2102121111103 is an equidigital number, since it uses as much as digits as its factorization.

2102121111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1433 counting only the distinct ones).

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

Adding to 2102121111103 its reverse (3011111212012), we get a palindrome (5113232323115).

The spelling of 2102121111103 in words is "two trillion, one hundred two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred three".