100210102021 has 4 divisors (see below), whose sum is σ = 100462520812. Its totient is φ = 99957683232.

The previous prime is 100210102007. The next prime is 100210102033. The reversal of 100210102021 is 120201012001.

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 86021957025 + 14188144996 = 293295^2 + 119114^2 .

It is a cyclic number.

It is not a de Polignac number, because 100210102021 - 2¹¹ = 100210099973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100210101989 and 100210102007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100210102051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126208800 + ... + 126209593.

It is an arithmetic number, because the mean of its divisors is an integer number (25115630203).

Almost surely, 2^100210102021 is an apocalyptic number.

It is an amenable number.

100210102021 is a deficient number, since it is larger than the sum of its proper divisors (252418791).

100210102021 is an equidigital number, since it uses as much as digits as its factorization.

100210102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252418790.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100210102021 its reverse (120201012001), we get a palindrome (220411114022).

The spelling of 100210102021 in words is "one hundred billion, two hundred ten million, one hundred two thousand, twenty-one".