101211302021 has 2 divisors, whose sum is σ = 101211302022. Its totient is φ = 101211302020.

The previous prime is 101211301927. The next prime is 101211302047. The reversal of 101211302021 is 120203112101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97243561921 + 3967740100 = 311839^2 + 62990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101211302021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101211301987 and 101211302005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101211302081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605651010 + 50605651011.

It is an arithmetic number, because the mean of its divisors is an integer number (50605651011).

Almost surely, 2^101211302021 is an apocalyptic number.

It is an amenable number.

101211302021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211302021 is an equidigital number, since it uses as much as digits as its factorization.

101211302021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 101211302021 its reverse (120203112101), we get a palindrome (221414414122).

The spelling of 101211302021 in words is "one hundred one billion, two hundred eleven million, three hundred two thousand, twenty-one".