103243211021 has 4 divisors (see below), whose sum is σ = 103254728544. Its totient is φ = 103231693500.

The previous prime is 103243210877. The next prime is 103243211033. The reversal of 103243211021 is 120112342301.

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.

It is a cyclic number.

It is not a de Polignac number, because 103243211021 - 2¹⁸ = 103242948877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103243210984 and 103243211002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103243211521) 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, 5745305 + ... + 5763246.

It is an arithmetic number, because the mean of its divisors is an integer number (25813682136).

Almost surely, 2^103243211021 is an apocalyptic number.

It is an amenable number.

103243211021 is a deficient number, since it is larger than the sum of its proper divisors (11517523).

103243211021 is an equidigital number, since it uses as much as digits as its factorization.

103243211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11517522.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 103243211021 its reverse (120112342301), we get a palindrome (223355553322).

The spelling of 103243211021 in words is "one hundred three billion, two hundred forty-three million, two hundred eleven thousand, twenty-one".