103011331021 has 12 divisors (see below), whose sum is σ = 104522614812. Its totient is φ = 101521365504.

The previous prime is 103011331013. The next prime is 103011331067. The reversal of 103011331021 is 120133110301.

It can be written as a sum of positive squares in 2 ways, for example, as 62715184900 + 40296146121 = 250430^2 + 200739^2 .

It is not a de Polignac number, because 103011331021 - 2³ = 103011331013 is a prime.

It is a super-2 number, since 2×103011331021² (a number of 23 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 = 103011330986 and 103011331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103011331091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3461421 + ... + 3491053.

It is an arithmetic number, because the mean of its divisors is an integer number (8710217901).

Almost surely, 2^103011331021 is an apocalyptic number.

It is an amenable number.

103011331021 is a deficient number, since it is larger than the sum of its proper divisors (1511283791).

103011331021 is an frugal number, since it uses more digits than its factorization.

103011331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30348 (or 30269 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 103011331021 its reverse (120133110301), we get a palindrome (223144441322).

The spelling of 103011331021 in words is "one hundred three billion, eleven million, three hundred thirty-one thousand, twenty-one".