101246021 has 2 divisors, whose sum is σ = 101246022. Its totient is φ = 101246020.

The previous prime is 101246017. The next prime is 101246053. The reversal of 101246021 is 120642101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90916225 + 10329796 = 9535^2 + 3214^2 .

It is a cyclic number.

It is not a de Polignac number, because 101246021 - 2² = 101246017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101246081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50623010 + 50623011.

It is an arithmetic number, because the mean of its divisors is an integer number (50623011).

Almost surely, 2^101246021 is an apocalyptic number.

It is an amenable number.

101246021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101246021 is an equidigital number, since it uses as much as digits as its factorization.

101246021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 101246021 is about 10062.1081787069. The cubic root of 101246021 is about 466.0787702930.

Adding to 101246021 its reverse (120642101), we get a palindrome (221888122).

The spelling of 101246021 in words is "one hundred one million, two hundred forty-six thousand, twenty-one".