221042143015320 has 128 divisors (see below), whose sum is σ = 724590767773440. Its totient is φ = 53498557923840.

The previous prime is 221042143015279. The next prime is 221042143015321. The reversal of 221042143015320 is 23510341240122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221042143015321) 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 31 ways as a sum of consecutive naturals, for example, 135778254 + ... + 137396573.

It is an arithmetic number, because the mean of its divisors is an integer number (5660865373230).

Almost surely, 2^{221042143015320} is an apocalyptic number.

221042143015320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221042143015320 is an abundant number, since it is smaller than the sum of its proper divisors (503548624758120).

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

221042143015320 is a wasteful number, since it uses less digits than its factorization.

221042143015320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273175465 (or 273175461 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 221042143015320 its reverse (23510341240122), we get a palindrome (244552484255442).

The spelling of 221042143015320 in words is "two hundred twenty-one trillion, forty-two billion, one hundred forty-three million, fifteen thousand, three hundred twenty".