2101100111203 has 2 divisors, whose sum is σ = 2101100111204. Its totient is φ = 2101100111202.

The previous prime is 2101100111189. The next prime is 2101100111207. The reversal of 2101100111203 is 3021110011012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101100111203 - 2¹⁷ = 2101099980131 is a prime.

It is a super-2 number, since 2×2101100111203² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2101100111207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050550055601 + 1050550055602.

It is an arithmetic number, because the mean of its divisors is an integer number (1050550055602).

Almost surely, 2^{2101100111203} is an apocalyptic number.

2101100111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101100111203 is an equidigital number, since it uses as much as digits as its factorization.

2101100111203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 2101100111203 its reverse (3021110011012), we get a palindrome (5122210122215).

The spelling of 2101100111203 in words is "two trillion, one hundred one billion, one hundred million, one hundred eleven thousand, two hundred three".