100210201010021 has 4 divisors (see below), whose sum is σ = 100210362664044. Its totient is φ = 100210039356000.

The previous prime is 100210201009987. The next prime is 100210201010057. The reversal of 100210201010021 is 120010102012001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26177702452225 + 74032498557796 = 5116415^2 + 8604214^2 .

It is a cyclic number.

It is not a de Polignac number, because 100210201010021 - 2⁶ = 100210201009957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100210201009984 and 100210201010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100210206010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79893560 + ... + 81138161.

It is an arithmetic number, because the mean of its divisors is an integer number (25052590666011).

Almost surely, 2^{100210201010021} is an apocalyptic number.

It is an amenable number.

100210201010021 is a deficient number, since it is larger than the sum of its proper divisors (161654023).

100210201010021 is an equidigital number, since it uses as much as digits as its factorization.

100210201010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161654022.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100210201010021 its reverse (120010102012001), we get a palindrome (220220303022022).

The spelling of 100210201010021 in words is "one hundred trillion, two hundred ten billion, two hundred one million, ten thousand, twenty-one".