102001202111 has 4 divisors (see below), whose sum is σ = 102003305400. Its totient is φ = 101999098824.

The previous prime is 102001202081. The next prime is 102001202113. The reversal of 102001202111 is 111202100201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111202100201 = 3701 ⋅30046501.

It is a cyclic number.

It is not a de Polignac number, because 102001202111 - 2¹⁸ = 102000939967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102001202092 and 102001202101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001202113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977141 + ... + 1076478.

It is an arithmetic number, because the mean of its divisors is an integer number (25500826350).

Almost surely, 2^102001202111 is an apocalyptic number.

102001202111 is a deficient number, since it is larger than the sum of its proper divisors (2103289).

102001202111 is an equidigital number, since it uses as much as digits as its factorization.

102001202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103288.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102001202111 its reverse (111202100201), we get a palindrome (213203302312).

The spelling of 102001202111 in words is "one hundred two billion, one million, two hundred two thousand, one hundred eleven".