1223402011 has 12 divisors (see below), whose sum is σ = 1361395056. Its totient is φ = 1092854160.

The previous prime is 1223401999. The next prime is 1223402017. The reversal of 1223402011 is 1102043221.

It is not a de Polignac number, because 1223402011 - 2¹³ = 1223393819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223402017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36471 + ... + 61456.

It is an arithmetic number, because the mean of its divisors is an integer number (113449588).

Almost surely, 2^1223402011 is an apocalyptic number.

1223402011 is a deficient number, since it is larger than the sum of its proper divisors (137993045).

1223402011 is an equidigital number, since it uses as much as digits as its factorization.

1223402011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98002 (or 97971 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1223402011 is about 34977.1641360474. The cubic root of 1223402011 is about 1069.5220187303.

Adding to 1223402011 its reverse (1102043221), we get a palindrome (2325445232).

The spelling of 1223402011 in words is "one billion, two hundred twenty-three million, four hundred two thousand, eleven".