1222333531 has 2 divisors, whose sum is σ = 1222333532. Its totient is φ = 1222333530.

The previous prime is 1222333513. The next prime is 1222333571. The reversal of 1222333531 is 1353332221.

Together with previous prime (1222333513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222333531 - 2¹³ = 1222325339 is a prime.

It is a super-2 number, since 2×1222333531² = 2988198522013855922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222333496 and 1222333505.

It is not a weakly prime, because it can be changed into another prime (1222333571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611166765 + 611166766.

It is an arithmetic number, because the mean of its divisors is an integer number (611166766).

Almost surely, 2^1222333531 is an apocalyptic number.

1222333531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222333531 is an equidigital number, since it uses as much as digits as its factorization.

1222333531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 1222333531 is about 34961.8868340941. The cubic root of 1222333531 is about 1069.2105659885.

Adding to 1222333531 its reverse (1353332221), we get a palindrome (2575665752).

It can be divided in two parts, 12223 and 33531, that added together give a palindrome (45754).

The spelling of 1222333531 in words is "one billion, two hundred twenty-two million, three hundred thirty-three thousand, five hundred thirty-one".