101223122211 has 12 divisors (see below), whose sum is σ = 146270331688. Its totient is φ = 67454779104.

The previous prime is 101223122149. The next prime is 101223122263. The reversal of 101223122211 is 112221322101.

101223122211 is a `hidden beast` number, since 10 + 122 + 312 + 221 + 1 = 666.

It is not a de Polignac number, because 101223122211 - 2¹⁷ = 101222991139 is a prime.

It is a super-2 number, since 2×101223122211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101223122311) 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, 2251705 + ... + 2296218.

Almost surely, 2^101223122211 is an apocalyptic number.

101223122211 is a deficient number, since it is larger than the sum of its proper divisors (45047209477).

101223122211 is a wasteful number, since it uses less digits than its factorization.

101223122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550402 (or 4550399 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 101223122211 its reverse (112221322101), we get a palindrome (213444444312).

The spelling of 101223122211 in words is "one hundred one billion, two hundred twenty-three million, one hundred twenty-two thousand, two hundred eleven".