23311212212 has 12 divisors (see below), whose sum is σ = 40804297380. Its totient is φ = 11652841536.

The previous prime is 23311212173. The next prime is 23311212227. The reversal of 23311212212 is 21221211332.

It can be written as a sum of positive squares in 2 ways, for example, as 21675495076 + 1635717136 = 147226^2 + 40444^2 .

It is a super-2 number, since 2×23311212212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672113 + ... + 705944.

It is an arithmetic number, because the mean of its divisors is an integer number (3400358115).

Almost surely, 2^23311212212 is an apocalyptic number.

It is an amenable number.

23311212212 is a deficient number, since it is larger than the sum of its proper divisors (17493085168).

23311212212 is a wasteful number, since it uses less digits than its factorization.

23311212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382290 (or 1382288 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 23311212212 its reverse (21221211332), we get a palindrome (44532423544).

The spelling of 23311212212 in words is "twenty-three billion, three hundred eleven million, two hundred twelve thousand, two hundred twelve".