221442202244123 has 48 divisors (see below), whose sum is σ = 270981966864384. Its totient is φ = 180079250440320.

The previous prime is 221442202244117. The next prime is 221442202244177. The reversal of 221442202244123 is 321442202244122.

It is a happy number.

221442202244123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221442202244123 - 2²⁰ = 221442201195547 is a prime.

It is a super-3 number, since 3×221442202244123³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221442202244323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 562443311 + ... + 562836887.

It is an arithmetic number, because the mean of its divisors is an integer number (5645457643008).

Almost surely, 2^{221442202244123} is an apocalyptic number.

221442202244123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221442202244123 is a deficient number, since it is larger than the sum of its proper divisors (49539764620261).

221442202244123 is a wasteful number, since it uses less digits than its factorization.

221442202244123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397672 (or 397665 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 221442202244123 its reverse (321442202244122), we get a palindrome (542884404488245).

Subtracting 221442202244123 from its reverse (321442202244122), we obtain a palindrome (99999999999999).

The spelling of 221442202244123 in words is "two hundred twenty-one trillion, four hundred forty-two billion, two hundred two million, two hundred forty-four thousand, one hundred twenty-three".