1222111151 has 2 divisors, whose sum is σ = 1222111152. Its totient is φ = 1222111150.

The previous prime is 1222111133. The next prime is 1222111157. The reversal of 1222111151 is 1511112221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222111151 - 2¹⁴ = 1222094767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222111157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611055575 + 611055576.

It is an arithmetic number, because the mean of its divisors is an integer number (611055576).

Almost surely, 2^1222111151 is an apocalyptic number.

1222111151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222111151 is an equidigital number, since it uses as much as digits as its factorization.

1222111151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40, while the sum is 17.

The square root of 1222111151 is about 34958.7063690864. The cubic root of 1222111151 is about 1069.1457213122.

Adding to 1222111151 its reverse (1511112221), we get a palindrome (2733223372).

The spelling of 1222111151 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred fifty-one".