101222772605 has 4 divisors (see below), whose sum is σ = 121467327132. Its totient is φ = 80978218080.

The previous prime is 101222772527. The next prime is 101222772613. The reversal of 101222772605 is 506277222101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26889112441 + 74333660164 = 163979^2 + 272642^2 .

It is not a de Polignac number, because 101222772605 - 2¹² = 101222768509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10122277256 + ... + 10122277265.

It is an arithmetic number, because the mean of its divisors is an integer number (30366831783).

Almost surely, 2^101222772605 is an apocalyptic number.

It is an amenable number.

101222772605 is a deficient number, since it is larger than the sum of its proper divisors (20244554527).

101222772605 is an equidigital number, since it uses as much as digits as its factorization.

101222772605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20244554526.

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 101222772605 its reverse (506277222101), we get a palindrome (607499994706).

The spelling of 101222772605 in words is "one hundred one billion, two hundred twenty-two million, seven hundred seventy-two thousand, six hundred five".