101223022221 has 24 divisors (see below), whose sum is σ = 152173743904. Its totient is φ = 67238352720.

The previous prime is 101223022207. The next prime is 101223022261. The reversal of 101223022221 is 122220322101.

It is not a de Polignac number, because 101223022221 - 2¹⁷ = 101222891149 is a prime.

It is a super-2 number, since 2×101223022221² (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 = 101223022194 and 101223022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101223022261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 684595 + ... + 819216.

Almost surely, 2^101223022221 is an apocalyptic number.

It is an amenable number.

101223022221 is a deficient number, since it is larger than the sum of its proper divisors (50950721683).

101223022221 is an equidigital number, since it uses as much as digits as its factorization.

101223022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504103 (or 1504091 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 101223022221 its reverse (122220322101), we get a palindrome (223443344322).

The spelling of 101223022221 in words is "one hundred one billion, two hundred twenty-three million, twenty-two thousand, two hundred twenty-one".