221310125141444 has 12 divisors (see below), whose sum is σ = 388954919509884. Its totient is φ = 110180148138624.

The previous prime is 221310125141411. The next prime is 221310125141561. The reversal of 221310125141444 is 444141521013122.

It can be written as a sum of positive squares in 2 ways, for example, as 149825433702400 + 71484691439044 = 12240320^2 + 8454862^2 .

It is a super-2 number, since 2×221310125141444² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118728606977 + ... + 118728608840.

It is an arithmetic number, because the mean of its divisors is an integer number (32412909959157).

Almost surely, 2^{221310125141444} is an apocalyptic number.

It is an amenable number.

221310125141444 is a deficient number, since it is larger than the sum of its proper divisors (167644794368440).

221310125141444 is a wasteful number, since it uses less digits than its factorization.

221310125141444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237457216054 (or 237457216052 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 221310125141444 its reverse (444141521013122), we get a palindrome (665451646154566).

The spelling of 221310125141444 in words is "two hundred twenty-one trillion, three hundred ten billion, one hundred twenty-five million, one hundred forty-one thousand, four hundred forty-four".