100210102020221 has 2 divisors, whose sum is σ = 100210102020222. Its totient is φ = 100210102020220.

The previous prime is 100210102020121. The next prime is 100210102020253. The reversal of 100210102020221 is 122020201012001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66313090591225 + 33897011428996 = 8143285^2 + 5822114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100210102020221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100210102020196 and 100210102020205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100210102020121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105051010110 + 50105051010111.

It is an arithmetic number, because the mean of its divisors is an integer number (50105051010111).

Almost surely, 2^{100210102020221} is an apocalyptic number.

It is an amenable number.

100210102020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100210102020221 is an equidigital number, since it uses as much as digits as its factorization.

100210102020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100210102020221 its reverse (122020201012001), we get a palindrome (222230303032222).

The spelling of 100210102020221 in words is "one hundred trillion, two hundred ten billion, one hundred two million, twenty thousand, two hundred twenty-one".