221555040413702 has 8 divisors (see below), whose sum is σ = 346781802386736. Its totient is φ = 105961106284792.

The previous prime is 221555040413701. The next prime is 221555040413831. The reversal of 221555040413702 is 207314040555122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221555040413702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221555040413701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2408206960973 + ... + 2408206961064.

It is an arithmetic number, because the mean of its divisors is an integer number (43347725298342).

Almost surely, 2^{221555040413702} is an apocalyptic number.

221555040413702 is a deficient number, since it is larger than the sum of its proper divisors (125226761973034).

221555040413702 is a wasteful number, since it uses less digits than its factorization.

221555040413702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816413922062.

The product of its (nonzero) digits is 336000, while the sum is 41.

Adding to 221555040413702 its reverse (207314040555122), we get a palindrome (428869080968824).

The spelling of 221555040413702 in words is "two hundred twenty-one trillion, five hundred fifty-five billion, forty million, four hundred thirteen thousand, seven hundred two".