1000100110021 has 2 divisors, whose sum is σ = 1000100110022. Its totient is φ = 1000100110020.

The previous prime is 1000100109997. The next prime is 1000100110033. The reversal of 1000100110021 is 1200110010001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992336737921 + 7763372100 = 996161^2 + 88110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000100110021 - 2¹⁷ = 1000099978949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000100109986 and 1000100110013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000100114021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500050055010 + 500050055011.

It is an arithmetic number, because the mean of its divisors is an integer number (500050055011).

Almost surely, 2^{1000100110021} is an apocalyptic number.

It is an amenable number.

1000100110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000100110021 is an equidigital number, since it uses as much as digits as its factorization.

1000100110021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1000100110021 its reverse (1200110010001), we get a palindrome (2200210120022).

The spelling of 1000100110021 in words is "one trillion, one hundred million, one hundred ten thousand, twenty-one".