103103120021 has 24 divisors (see below), whose sum is σ = 120236256000. Its totient is φ = 88038910080.

The previous prime is 103103119939. The next prime is 103103120051. The reversal of 103103120021 is 120021301301.

It is not a de Polignac number, because 103103120021 - 2¹⁴ = 103103103637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103103119978 and 103103120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103103120051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976220 + ... + 1076666.

It is an arithmetic number, because the mean of its divisors is an integer number (5009844000).

Almost surely, 2^103103120021 is an apocalyptic number.

103103120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103103120021 is a deficient number, since it is larger than the sum of its proper divisors (17133135979).

103103120021 is a wasteful number, since it uses less digits than its factorization.

103103120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100985 (or 100974 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 103103120021 its reverse (120021301301), we get a palindrome (223124421322).

The spelling of 103103120021 in words is "one hundred three billion, one hundred three million, one hundred twenty thousand, twenty-one".