221400102121044 has 192 divisors, whose sum is σ = 684290075535360. Its totient is φ = 54022900216320.

The previous prime is 221400102121021. The next prime is 221400102121061. The reversal of 221400102121044 is 440121201004122.

It is a happy number.

221400102121044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110663022 + ... + 112645925.

It is an arithmetic number, because the mean of its divisors is an integer number (3564010810080).

Almost surely, 2^{221400102121044} is an apocalyptic number.

It is an amenable number.

221400102121044 is an abundant number, since it is smaller than the sum of its proper divisors (462889973414316).

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

221400102121044 is a wasteful number, since it uses less digits than its factorization.

221400102121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223309038 (or 223309036 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 221400102121044 its reverse (440121201004122), we get a palindrome (661521303125166).

The spelling of 221400102121044 in words is "two hundred twenty-one trillion, four hundred billion, one hundred two million, one hundred twenty-one thousand, forty-four".