10220108221 has 2 divisors, whose sum is σ = 10220108222. Its totient is φ = 10220108220.

The previous prime is 10220108219. The next prime is 10220108233. The reversal of 10220108221 is 12280102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9997800121 + 222308100 = 99989^2 + 14910^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220108221 - 2¹ = 10220108219 is a prime.

It is a super-2 number, since 2×10220108221² (a number of 21 digits) contains 22 as substring.

Together with 10220108219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10220108281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110054110 + 5110054111.

It is an arithmetic number, because the mean of its divisors is an integer number (5110054111).

Almost surely, 2^10220108221 is an apocalyptic number.

It is an amenable number.

10220108221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220108221 is an equidigital number, since it uses as much as digits as its factorization.

10220108221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 10220108221 in words is "ten billion, two hundred twenty million, one hundred eight thousand, two hundred twenty-one".