1222002511 has 2 divisors, whose sum is σ = 1222002512. Its totient is φ = 1222002510.

The previous prime is 1222002473. The next prime is 1222002527. The reversal of 1222002511 is 1152002221.

It is a happy number.

It is an a-pointer prime, because the next prime (1222002527) can be obtained adding 1222002511 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222002511 - 2¹⁷ = 1221871439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222002541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611001255 + 611001256.

It is an arithmetic number, because the mean of its divisors is an integer number (611001256).

Almost surely, 2^1222002511 is an apocalyptic number.

1222002511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222002511 is an equidigital number, since it uses as much as digits as its factorization.

1222002511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1222002511 is about 34957.1525013122. The cubic root of 1222002511 is about 1069.1140396786.

Adding to 1222002511 its reverse (1152002221), we get a palindrome (2374004732).

The spelling of 1222002511 in words is "one billion, two hundred twenty-two million, two thousand, five hundred eleven".