221440120043 has 4 divisors (see below), whose sum is σ = 221629224648. Its totient is φ = 221251015440.

The previous prime is 221440120039. The next prime is 221440120051. The reversal of 221440120043 is 340021044122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340021044122 = 2 ⋅170010522061.

It is a cyclic number.

It is not a de Polignac number, because 221440120043 - 2² = 221440120039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221440120943) 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, 94550546 + ... + 94552887.

It is an arithmetic number, because the mean of its divisors is an integer number (55407306162).

Almost surely, 2^221440120043 is an apocalyptic number.

221440120043 is a deficient number, since it is larger than the sum of its proper divisors (189104605).

221440120043 is a wasteful number, since it uses less digits than its factorization.

221440120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189104604.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221440120043 its reverse (340021044122), we get a palindrome (561461164165).

The spelling of 221440120043 in words is "two hundred twenty-one billion, four hundred forty million, one hundred twenty thousand, forty-three".