10102020121111 has 4 divisors (see below), whose sum is σ = 10174696525000. Its totient is φ = 10029343717224.

The previous prime is 10102020120991. The next prime is 10102020121147. The reversal of 10102020121111 is 11112102020101.

It is a happy number.

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 10102020121111 - 2²³ = 10102011732503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102020121091 and 10102020121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102020124111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36338201736 + ... + 36338202013.

It is an arithmetic number, because the mean of its divisors is an integer number (2543674131250).

Almost surely, 2^{10102020121111} is an apocalyptic number.

10102020121111 is a deficient number, since it is larger than the sum of its proper divisors (72676403889).

10102020121111 is an equidigital number, since it uses as much as digits as its factorization.

10102020121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72676403888.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10102020121111 its reverse (11112102020101), we get a palindrome (21214122141212).

The spelling of 10102020121111 in words is "ten trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, one hundred eleven".