211112223031 has 2 divisors, whose sum is σ = 211112223032. Its totient is φ = 211112223030.

The previous prime is 211112223017. The next prime is 211112223097. The reversal of 211112223031 is 130322211112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211112223031 - 2²¹ = 211110125879 is a prime.

It is a super-2 number, since 2×211112223031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211112223631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556111515 + 105556111516.

It is an arithmetic number, because the mean of its divisors is an integer number (105556111516).

Almost surely, 2^211112223031 is an apocalyptic number.

211112223031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112223031 is an equidigital number, since it uses as much as digits as its factorization.

211112223031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211112223031 its reverse (130322211112), we get a palindrome (341434434143).

The spelling of 211112223031 in words is "two hundred eleven billion, one hundred twelve million, two hundred twenty-three thousand, thirty-one".