101250111421 has 2 divisors, whose sum is σ = 101250111422. Its totient is φ = 101250111420.

The previous prime is 101250111377. The next prime is 101250111491. The reversal of 101250111421 is 124111052101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90243164025 + 11006947396 = 300405^2 + 104914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101250111421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101250111491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50625055710 + 50625055711.

It is an arithmetic number, because the mean of its divisors is an integer number (50625055711).

Almost surely, 2^101250111421 is an apocalyptic number.

It is an amenable number.

101250111421 is a deficient number, since it is larger than the sum of its proper divisors (1).

101250111421 is an equidigital number, since it uses as much as digits as its factorization.

101250111421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 101250111421 its reverse (124111052101), we get a palindrome (225361163522).

The spelling of 101250111421 in words is "one hundred one billion, two hundred fifty million, one hundred eleven thousand, four hundred twenty-one".