103020201121021 has 4 divisors (see below), whose sum is σ = 103020251138044. Its totient is φ = 103020151104000.

The previous prime is 103020201121007. The next prime is 103020201121049. The reversal of 103020201121021 is 120121102020301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99829472760900 + 3190728360121 = 9991470^2 + 1786261^2 .

It is a cyclic number.

It is not a de Polignac number, because 103020201121021 - 2⁹ = 103020201120509 is a prime.

It is a super-2 number, since 2×103020201121021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103020201120986 and 103020201121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103020201161021) 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, 21780030 + ... + 26084671.

It is an arithmetic number, because the mean of its divisors is an integer number (25755062784511).

Almost surely, 2^{103020201121021} is an apocalyptic number.

It is an amenable number.

103020201121021 is a deficient number, since it is larger than the sum of its proper divisors (50017023).

103020201121021 is an equidigital number, since it uses as much as digits as its factorization.

103020201121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50017022.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 103020201121021 its reverse (120121102020301), we get a palindrome (223141303141322).

The spelling of 103020201121021 in words is "one hundred three trillion, twenty billion, two hundred one million, one hundred twenty-one thousand, twenty-one".