103512788221 has 2 divisors, whose sum is σ = 103512788222. Its totient is φ = 103512788220.

The previous prime is 103512788213. The next prime is 103512788227. The reversal of 103512788221 is 122887215301.

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., 103510192900 + 2595321 = 321730^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 103512788221 - 2³ = 103512788213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103512788227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51756394110 + 51756394111.

It is an arithmetic number, because the mean of its divisors is an integer number (51756394111).

Almost surely, 2^103512788221 is an apocalyptic number.

It is an amenable number.

103512788221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103512788221 is an equidigital number, since it uses as much as digits as its factorization.

103512788221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 103512788221 in words is "one hundred three billion, five hundred twelve million, seven hundred eighty-eight thousand, two hundred twenty-one".