102120210202111 has 4 divisors (see below), whose sum is σ = 102132650240800. Its totient is φ = 102107770163424.

The previous prime is 102120210202091. The next prime is 102120210202207. The reversal of 102120210202111 is 111202012021201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102120210202111 - 2³³ = 102111620267519 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 (102120210202711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6220007031 + ... + 6220023448.

It is an arithmetic number, because the mean of its divisors is an integer number (25533162560200).

Almost surely, 2^{102120210202111} is an apocalyptic number.

102120210202111 is a deficient number, since it is larger than the sum of its proper divisors (12440038689).

102120210202111 is an equidigital number, since it uses as much as digits as its factorization.

102120210202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12440038688.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102120210202111 its reverse (111202012021201), we get a palindrome (213322222223312).

The spelling of 102120210202111 in words is "one hundred two trillion, one hundred twenty billion, two hundred ten million, two hundred two thousand, one hundred eleven".