221444255224450 has 48 divisors (see below), whose sum is σ = 412014836594880. Its totient is φ = 88550067453120.

The previous prime is 221444255224433. The next prime is 221444255224459. The reversal of 221444255224450 is 54422552444122.

It is a happy number.

It is a super-2 number, since 2×221444255224450² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221444255224450.

It is not an unprimeable number, because it can be changed into a prime (221444255224459) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2252162989 + ... + 2252261311.

It is an arithmetic number, because the mean of its divisors is an integer number (8583642429060).

Almost surely, 2^{221444255224450} is an apocalyptic number.

221444255224450 is a deficient number, since it is larger than the sum of its proper divisors (190570581370430).

221444255224450 is a wasteful number, since it uses less digits than its factorization.

221444255224450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111931 (or 111926 counting only the distinct ones).

The product of its (nonzero) digits is 4096000, while the sum is 46.

The spelling of 221444255224450 in words is "two hundred twenty-one trillion, four hundred forty-four billion, two hundred fifty-five million, two hundred twenty-four thousand, four hundred fifty".