101312223221 has 12 divisors (see below), whose sum is σ = 111375225696. Its totient is φ = 92089194120.

The previous prime is 101312223209. The next prime is 101312223241. The reversal of 101312223221 is 122322213101.

It is not a de Polignac number, because 101312223221 - 2²⁶ = 101245114357 is a prime.

It is a super-2 number, since 2×101312223221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101312223193 and 101312223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101312223241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 875666 + ... + 984588.

It is an arithmetic number, because the mean of its divisors is an integer number (9281268808).

Almost surely, 2^101312223221 is an apocalyptic number.

101312223221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101312223221 is a deficient number, since it is larger than the sum of its proper divisors (10063002475).

101312223221 is a wasteful number, since it uses less digits than its factorization.

101312223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116632 (or 116621 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 101312223221 its reverse (122322213101), we get a palindrome (223634436322).

The spelling of 101312223221 in words is "one hundred one billion, three hundred twelve million, two hundred twenty-three thousand, two hundred twenty-one".