103211020121 has 4 divisors (see below), whose sum is σ = 112593840144. Its totient is φ = 93828200100.

The previous prime is 103211020093. The next prime is 103211020229. The reversal of 103211020121 is 121020112301.

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: 121020112301 = 11 ⋅11001828391.

It is a cyclic number.

It is not a de Polignac number, because 103211020121 - 2¹⁰ = 103211019097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103211020096 and 103211020105.

It is not an unprimeable number, because it can be changed into a prime (103211020021) 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, 4691409995 + ... + 4691410016.

It is an arithmetic number, because the mean of its divisors is an integer number (28148460036).

Almost surely, 2^103211020121 is an apocalyptic number.

103211020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103211020121 is a deficient number, since it is larger than the sum of its proper divisors (9382820023).

103211020121 is an equidigital number, since it uses as much as digits as its factorization.

103211020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9382820022.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 103211020121 its reverse (121020112301), we get a palindrome (224231132422).

The spelling of 103211020121 in words is "one hundred three billion, two hundred eleven million, twenty thousand, one hundred twenty-one".