1226423111 has 2 divisors, whose sum is σ = 1226423112. Its totient is φ = 1226423110.

The previous prime is 1226423101. The next prime is 1226423161. The reversal of 1226423111 is 1113246221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226423111 - 2⁶ = 1226423047 is a prime.

It is a super-2 number, since 2×1226423111² = 3008227294389836642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226423101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613211555 + 613211556.

It is an arithmetic number, because the mean of its divisors is an integer number (613211556).

Almost surely, 2^1226423111 is an apocalyptic number.

1226423111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226423111 is an equidigital number, since it uses as much as digits as its factorization.

1226423111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 1226423111 is about 35020.3242560659. The cubic root of 1226423111 is about 1070.4016633345.

Adding to 1226423111 its reverse (1113246221), we get a palindrome (2339669332).

The spelling of 1226423111 in words is "one billion, two hundred twenty-six million, four hundred twenty-three thousand, one hundred eleven".