212223100031031 has 16 divisors (see below), whose sum is σ = 295267733420544. Its totient is φ = 135330300482784.

The previous prime is 212223100031011. The next prime is 212223100031057. The reversal of 212223100031031 is 130130001322212.

It is not a de Polignac number, because 212223100031031 - 2⁵ = 212223100030999 is a prime.

It is a super-2 number, since 2×212223100031031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212223100030989 and 212223100031007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212223100031011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22249230 + ... + 30322836.

It is an arithmetic number, because the mean of its divisors is an integer number (18454233338784).

Almost surely, 2^{212223100031031} is an apocalyptic number.

212223100031031 is a deficient number, since it is larger than the sum of its proper divisors (83044633389513).

212223100031031 is a wasteful number, since it uses less digits than its factorization.

212223100031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8454590.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212223100031031 its reverse (130130001322212), we get a palindrome (342353101353243).

The spelling of 212223100031031 in words is "two hundred twelve trillion, two hundred twenty-three billion, one hundred million, thirty-one thousand, thirty-one".