103100021 has 8 divisors (see below), whose sum is σ = 103921920. Its totient is φ = 102281472.

The previous prime is 103099991. The next prime is 103100029. The reversal of 103100021 is 120001301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103100021 - 2¹⁸ = 102837877 is a prime.

It is a super-2 number, since 2×103100021² = 21259228660400882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103099981 and 103100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103100029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119036 + ... + 119898.

It is an arithmetic number, because the mean of its divisors is an integer number (12990240).

Almost surely, 2^103100021 is an apocalyptic number.

It is an amenable number.

103100021 is a deficient number, since it is larger than the sum of its proper divisors (821899).

103100021 is an equidigital number, since it uses as much as digits as its factorization.

103100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 103100021 is about 10153.8180503690. The cubic root of 103100021 is about 468.9064981216.

Adding to 103100021 its reverse (120001301), we get a palindrome (223101322).

The spelling of 103100021 in words is "one hundred three million, one hundred thousand, twenty-one".