102020411 has 4 divisors (see below), whose sum is σ = 105311424. Its totient is φ = 98729400.

The previous prime is 102020407. The next prime is 102020419. The reversal of 102020411 is 114020201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114020201 = 31 ⋅3678071.

It is a cyclic number.

It is not a de Polignac number, because 102020411 - 2² = 102020407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020392 and 102020401.

It is not an unprimeable number, because it can be changed into a prime (102020419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645460 + ... + 1645521.

It is an arithmetic number, because the mean of its divisors is an integer number (26327856).

Almost surely, 2^102020411 is an apocalyptic number.

102020411 is a deficient number, since it is larger than the sum of its proper divisors (3291013).

102020411 is an equidigital number, since it uses as much as digits as its factorization.

102020411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291012.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102020411 is about 10100.5153828901. The cubic root of 102020411 is about 467.2640364111.

Adding to 102020411 its reverse (114020201), we get a palindrome (216040612).

The spelling of 102020411 in words is "one hundred two million, twenty thousand, four hundred eleven".