100000020122281 has 2 divisors, whose sum is σ = 100000020122282. Its totient is φ = 100000020122280.

The previous prime is 100000020122203. The next prime is 100000020122293. The reversal of 100000020122281 is 182221020000001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99467909689600 + 532110432681 = 9973360^2 + 729459^2 .

It is an emirp because it is prime and its reverse (182221020000001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100000020122281 - 2²⁷ = 99999885904553 is a prime.

It is a super-2 number, since 2×100000020122281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100000020125281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000010061140 + 50000010061141.

It is an arithmetic number, because the mean of its divisors is an integer number (50000010061141).

Almost surely, 2^{100000020122281} is an apocalyptic number.

It is an amenable number.

100000020122281 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000020122281 is an equidigital number, since it uses as much as digits as its factorization.

100000020122281 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.

Adding to 100000020122281 its reverse (182221020000001), we get a palindrome (282221040122282).

The spelling of 100000020122281 in words is "one hundred trillion, twenty million, one hundred twenty-two thousand, two hundred eighty-one".