1222521031 has 2 divisors, whose sum is σ = 1222521032. Its totient is φ = 1222521030.

The previous prime is 1222521029. The next prime is 1222521101. The reversal of 1222521031 is 1301252221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222521031 - 2¹ = 1222521029 is a prime.

It is a super-2 number, since 2×1222521031² = 2989115342474605922, which contains 22 as substring.

Together with 1222521029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222521631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611260515 + 611260516.

It is an arithmetic number, because the mean of its divisors is an integer number (611260516).

Almost surely, 2^1222521031 is an apocalyptic number.

1222521031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222521031 is an equidigital number, since it uses as much as digits as its factorization.

1222521031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1222521031 is about 34964.5682227023. The cubic root of 1222521031 is about 1069.2652337547.

Adding to 1222521031 its reverse (1301252221), we get a palindrome (2523773252).

The spelling of 1222521031 in words is "one billion, two hundred twenty-two million, five hundred twenty-one thousand, thirty-one".