103011213121 has 2 divisors, whose sum is σ = 103011213122. Its totient is φ = 103011213120.

The previous prime is 103011213077. The next prime is 103011213127. The reversal of 103011213121 is 121312110301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102077055025 + 934158096 = 319495^2 + 30564^2 .

It is a cyclic number.

It is not a de Polignac number, because 103011213121 - 2⁹ = 103011212609 is a prime.

It is a super-2 number, since 2×103011213121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103011213095 and 103011213104.

It is not a weakly prime, because it can be changed into another prime (103011213127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51505606560 + 51505606561.

It is an arithmetic number, because the mean of its divisors is an integer number (51505606561).

Almost surely, 2^103011213121 is an apocalyptic number.

It is an amenable number.

103011213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

103011213121 is an equidigital number, since it uses as much as digits as its factorization.

103011213121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 103011213121 its reverse (121312110301), we get a palindrome (224323323422).

The spelling of 103011213121 in words is "one hundred three billion, eleven million, two hundred thirteen thousand, one hundred twenty-one".