102020011112021 has 4 divisors (see below), whose sum is σ = 103030110232044. Its totient is φ = 101009911992000.

The previous prime is 102020011112003. The next prime is 102020011112027. The reversal of 102020011112021 is 120211110020201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100634001722500 + 1386009389521 = 10031650^2 + 1177289^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020011112021 - 2⁶ = 102020011111957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020011111987 and 102020011112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020011112027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505049559860 + ... + 505049560061.

It is an arithmetic number, because the mean of its divisors is an integer number (25757527558011).

Almost surely, 2^{102020011112021} is an apocalyptic number.

It is an amenable number.

102020011112021 is a deficient number, since it is larger than the sum of its proper divisors (1010099120023).

102020011112021 is a wasteful number, since it uses less digits than its factorization.

102020011112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010099120022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102020011112021 its reverse (120211110020201), we get a palindrome (222231121132222).

The spelling of 102020011112021 in words is "one hundred two trillion, twenty billion, eleven million, one hundred twelve thousand, twenty-one".