233311222011 has 16 divisors (see below), whose sum is σ = 365130562304. Its totient is φ = 129717435744.

The previous prime is 233311222009. The next prime is 233311222021. The reversal of 233311222011 is 110222113332.

It is not a de Polignac number, because 233311222011 - 2¹ = 233311222009 is a prime.

It is a super-2 number, since 2×233311222011² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233311222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150135145 + ... + 150136698.

It is an arithmetic number, because the mean of its divisors is an integer number (22820660144).

Almost surely, 2^233311222011 is an apocalyptic number.

233311222011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

233311222011 is a deficient number, since it is larger than the sum of its proper divisors (131819340293).

233311222011 is a wasteful number, since it uses less digits than its factorization.

233311222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300271890.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 233311222011 its reverse (110222113332), we get a palindrome (343533335343).

The spelling of 233311222011 in words is "two hundred thirty-three billion, three hundred eleven million, two hundred twenty-two thousand, eleven".