10000506100021 has 2 divisors, whose sum is σ = 10000506100022. Its totient is φ = 10000506100020.

The previous prime is 10000506099949. The next prime is 10000506100037. The reversal of 10000506100021 is 12000160500001.

It is a happy number.

It is an a-pointer prime, because the next prime (10000506100037) can be obtained adding 10000506100021 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8389538460900 + 1610967639121 = 2896470^2 + 1269239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10000506100021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10000506099968 and 10000506100004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000506400021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000253050010 + 5000253050011.

It is an arithmetic number, because the mean of its divisors is an integer number (5000253050011).

Almost surely, 2^{10000506100021} is an apocalyptic number.

It is an amenable number.

10000506100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000506100021 is an equidigital number, since it uses as much as digits as its factorization.

10000506100021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 10000506100021 its reverse (12000160500001), we get a palindrome (22000666600022).

The spelling of 10000506100021 in words is "ten trillion, five hundred six million, one hundred thousand, twenty-one".