103102021 has 4 divisors (see below), whose sum is σ = 112474944. Its totient is φ = 93729100.

The previous prime is 103101941. The next prime is 103102033. The reversal of 103102021 is 120201301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120201301 = 11 ⋅10927391.

It is a cyclic number.

It is not a de Polignac number, because 103102021 - 2¹¹ = 103099973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103101989 and 103102007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103102081) 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, 4686445 + ... + 4686466.

It is an arithmetic number, because the mean of its divisors is an integer number (28118736).

Almost surely, 2^103102021 is an apocalyptic number.

103102021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103102021 is a deficient number, since it is larger than the sum of its proper divisors (9372923).

103102021 is an equidigital number, since it uses as much as digits as its factorization.

103102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9372922.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 103102021 is about 10153.9165350125. The cubic root of 103102021 is about 468.9095301512.

Adding to 103102021 its reverse (120201301), we get a palindrome (223303322).

The spelling of 103102021 in words is "one hundred three million, one hundred two thousand, twenty-one".