102020001202111 has 4 divisors (see below), whose sum is σ = 102304179478800. Its totient is φ = 101735822925424.

The previous prime is 102020001202099. The next prime is 102020001202121. The reversal of 102020001202111 is 111202100020201.

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 102020001202111 - 2¹⁹ = 102020000677823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020001202091 and 102020001202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020001202121) 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, 142089137806 + ... + 142089138523.

It is an arithmetic number, because the mean of its divisors is an integer number (25576044869700).

Almost surely, 2^{102020001202111} is an apocalyptic number.

102020001202111 is a deficient number, since it is larger than the sum of its proper divisors (284178276689).

102020001202111 is an equidigital number, since it uses as much as digits as its factorization.

102020001202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284178276688.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102020001202111 its reverse (111202100020201), we get a palindrome (213222101222312).

The spelling of 102020001202111 in words is "one hundred two trillion, twenty billion, one million, two hundred two thousand, one hundred eleven".