23011012221012 has 72 divisors (see below), whose sum is σ = 58244769797760. Its totient is φ = 7660048207680.

The previous prime is 23011012220969. The next prime is 23011012221013. The reversal of 23011012221012 is 21012221011032.

23011012221012 is a `hidden beast` number, since 230 + 110 + 1 + 222 + 101 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011012221013) 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 23 ways as a sum of consecutive naturals, for example, 256800337 + ... + 256889927.

It is an arithmetic number, because the mean of its divisors is an integer number (808955136080).

Almost surely, 2^{23011012221012} is an apocalyptic number.

It is an amenable number.

23011012221012 is an abundant number, since it is smaller than the sum of its proper divisors (35233757576748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23011012221012 is a wasteful number, since it uses less digits than its factorization.

23011012221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99093 (or 99088 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 23011012221012 its reverse (21012221011032), we get a palindrome (44023233232044).

The spelling of 23011012221012 in words is "twenty-three trillion, eleven billion, twelve million, two hundred twenty-one thousand, twelve".