1031222011 has 2 divisors, whose sum is σ = 1031222012. Its totient is φ = 1031222010.

The previous prime is 1031221999. The next prime is 1031222021. The reversal of 1031222011 is 1102221301.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031222011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031221982 and 1031222000.

It is not a weakly prime, because it can be changed into another prime (1031222021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515611005 + 515611006.

It is an arithmetic number, because the mean of its divisors is an integer number (515611006).

Almost surely, 2^1031222011 is an apocalyptic number.

1031222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031222011 is an equidigital number, since it uses as much as digits as its factorization.

1031222011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1031222011 is about 32112.6456555669. The cubic root of 1031222011 is about 1010.3008648493.

Adding to 1031222011 its reverse (1102221301), we get a palindrome (2133443312).

It can be divided in two parts, 10312 and 22011, that added together give a palindrome (32323).

The spelling of 1031222011 in words is "one billion, thirty-one million, two hundred twenty-two thousand, eleven".