100010101001021 has 8 divisors (see below), whose sum is σ = 103736094421080. Its totient is φ = 96302598864192.

The previous prime is 100010101000969. The next prime is 100010101001059. The reversal of 100010101001021 is 120100101010001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23583795379225 + 76426305621796 = 4856315^2 + 8742214^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100010101001021 - 2²² = 100010096806717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010101001071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4622809790 + ... + 4622831423.

It is an arithmetic number, because the mean of its divisors is an integer number (12967011802635).

Almost surely, 2^{100010101001021} is an apocalyptic number.

It is an amenable number.

100010101001021 is a deficient number, since it is larger than the sum of its proper divisors (3725993420059).

100010101001021 is an equidigital number, since it uses as much as digits as its factorization.

100010101001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245641615.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100010101001021 its reverse (120100101010001), we get a palindrome (220110202011022).

The spelling of 100010101001021 in words is "one hundred trillion, ten billion, one hundred one million, one thousand, twenty-one".