100202030221 has 2 divisors, whose sum is σ = 100202030222. Its totient is φ = 100202030220.

The previous prime is 100202030171. The next prime is 100202030231. The reversal of 100202030221 is 122030202001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62995478121 + 37206552100 = 250989^2 + 192890^2 .

It is a cyclic number.

It is not a de Polignac number, because 100202030221 - 2¹⁵ = 100201997453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100202030231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50101015110 + 50101015111.

It is an arithmetic number, because the mean of its divisors is an integer number (50101015111).

Almost surely, 2^100202030221 is an apocalyptic number.

It is an amenable number.

100202030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100202030221 is an equidigital number, since it uses as much as digits as its factorization.

100202030221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 100202030221 its reverse (122030202001), we get a palindrome (222232232222).

The spelling of 100202030221 in words is "one hundred billion, two hundred two million, thirty thousand, two hundred twenty-one".