221400112301 has 4 divisors (see below), whose sum is σ = 221432520732. Its totient is φ = 221367703872.

The previous prime is 221400112261. The next prime is 221400112321. The reversal of 221400112301 is 103211004122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103211004122 = 2 ⋅51605502061.

It can be written as a sum of positive squares in 2 ways, for example, as 73048035076 + 148352077225 = 270274^2 + 385165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221400112301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221400112301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221400112321) 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, 16193966 + ... + 16207631.

It is an arithmetic number, because the mean of its divisors is an integer number (55358130183).

Almost surely, 2^221400112301 is an apocalyptic number.

It is an amenable number.

221400112301 is a deficient number, since it is larger than the sum of its proper divisors (32408431).

221400112301 is an equidigital number, since it uses as much as digits as its factorization.

221400112301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32408430.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221400112301 its reverse (103211004122), we get a palindrome (324611116423).

The spelling of 221400112301 in words is "two hundred twenty-one billion, four hundred million, one hundred twelve thousand, three hundred one".