101223212031 has 16 divisors (see below), whose sum is σ = 150162174720. Its totient is φ = 67391304120.

The previous prime is 101223212017. The next prime is 101223212087. The reversal of 101223212031 is 130212322101.

It is not a de Polignac number, because 101223212031 - 2¹⁰ = 101223211007 is a prime.

It is a super-2 number, since 2×101223212031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101223211995 and 101223212013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101223212011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2502825 + ... + 2542946.

It is an arithmetic number, because the mean of its divisors is an integer number (9385135920).

Almost surely, 2^101223212031 is an apocalyptic number.

101223212031 is a deficient number, since it is larger than the sum of its proper divisors (48938962689).

101223212031 is an equidigital number, since it uses as much as digits as its factorization.

101223212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046523 (or 5046517 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 101223212031 its reverse (130212322101), we get a palindrome (231435534132).

The spelling of 101223212031 in words is "one hundred one billion, two hundred twenty-three million, two hundred twelve thousand, thirty-one".