221041656124044 has 24 divisors (see below), whose sum is σ = 589444416331008. Its totient is φ = 63154758892560.

The previous prime is 221041656124021. The next prime is 221041656124073. The reversal of 221041656124044 is 440421656140122.

It is a happy number.

It is a super-2 number, since 2×221041656124044² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 221041656123987 and 221041656124005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315724143512 + ... + 1315724143679.

It is an arithmetic number, because the mean of its divisors is an integer number (24560184013792).

Almost surely, 2^{221041656124044} is an apocalyptic number.

It is an amenable number.

221041656124044 is an abundant number, since it is smaller than the sum of its proper divisors (368402760206964).

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

221041656124044 is a wasteful number, since it uses less digits than its factorization.

221041656124044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631448287205 (or 2631448287203 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 221041656124044 in words is "two hundred twenty-one trillion, forty-one billion, six hundred fifty-six million, one hundred twenty-four thousand, forty-four".