23621221201011 has 128 divisors (see below), whose sum is σ = 37164900556800. Its totient is φ = 13067193784320.

The previous prime is 23621221200917. The next prime is 23621221201031. The reversal of 23621221201011 is 11010212212632.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-23621221201011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23621221201031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28771279981 + ... + 28771280801.

It is an arithmetic number, because the mean of its divisors is an integer number (290350785600).

Almost surely, 2^{23621221201011} is an apocalyptic number.

23621221201011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23621221201011 is a deficient number, since it is larger than the sum of its proper divisors (13543679355789).

23621221201011 is a wasteful number, since it uses less digits than its factorization.

23621221201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 23621221201011 its reverse (11010212212632), we get a palindrome (34631433413643).

The spelling of 23621221201011 in words is "twenty-three trillion, six hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, eleven".