101122220281 has 2 divisors, whose sum is σ = 101122220282. Its totient is φ = 101122220280.

The previous prime is 101122220273. The next prime is 101122220293. The reversal of 101122220281 is 182022221101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84414072681 + 16708147600 = 290541^2 + 129260^2 .

It is a cyclic number.

It is not a de Polignac number, because 101122220281 - 2³ = 101122220273 is a prime.

It is a super-2 number, since 2×101122220281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101122227281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50561110140 + 50561110141.

It is an arithmetic number, because the mean of its divisors is an integer number (50561110141).

Almost surely, 2^101122220281 is an apocalyptic number.

It is an amenable number.

101122220281 is a deficient number, since it is larger than the sum of its proper divisors (1).

101122220281 is an equidigital number, since it uses as much as digits as its factorization.

101122220281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 101122220281 its reverse (182022221101), we get a palindrome (283144441382).

The spelling of 101122220281 in words is "one hundred one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred eighty-one".