211422211031 has 4 divisors (see below), whose sum is σ = 213601821552. Its totient is φ = 209242600512.

The previous prime is 211422211019. The next prime is 211422211087. The reversal of 211422211031 is 130112224112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211422211031 - 2¹⁰ = 211422210007 is a prime.

It is a super-2 number, since 2×211422211031² (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 = 211422210994 and 211422211012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211422217031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089805115 + ... + 1089805308.

It is an arithmetic number, because the mean of its divisors is an integer number (53400455388).

Almost surely, 2^211422211031 is an apocalyptic number.

211422211031 is a deficient number, since it is larger than the sum of its proper divisors (2179610521).

211422211031 is an equidigital number, since it uses as much as digits as its factorization.

211422211031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179610520.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211422211031 its reverse (130112224112), we get a palindrome (341534435143).

The spelling of 211422211031 in words is "two hundred eleven billion, four hundred twenty-two million, two hundred eleven thousand, thirty-one".