1012221031 has 2 divisors, whose sum is σ = 1012221032. Its totient is φ = 1012221030.

The previous prime is 1012221013. The next prime is 1012221037. The reversal of 1012221031 is 1301222101.

1012221031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (1012221013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1301222101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012221031 - 2²⁹ = 475350119 is a prime.

It is a super-2 number, since 2×1012221031² = 2049182831197405922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012221037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110515 + 506110516.

It is an arithmetic number, because the mean of its divisors is an integer number (506110516).

Almost surely, 2^1012221031 is an apocalyptic number.

1012221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012221031 is an equidigital number, since it uses as much as digits as its factorization.

1012221031 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 1012221031 is about 31815.4212764816. The cubic root of 1012221031 is about 1004.0571939159.

Adding to 1012221031 its reverse (1301222101), we get a palindrome (2313443132).

The spelling of 1012221031 in words is "one billion, twelve million, two hundred twenty-one thousand, thirty-one".