221134082401 has 4 divisors (see below), whose sum is σ = 221350669204. Its totient is φ = 220917495600.

The previous prime is 221134082359. The next prime is 221134082437. The reversal of 221134082401 is 104280431122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154712422225 + 66421660176 = 393335^2 + 257724^2 .

It is a cyclic number.

It is not a de Polignac number, because 221134082401 - 2¹¹ = 221134080353 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 221134082401.

It is not an unprimeable number, because it can be changed into a prime (221134082471) 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, 108291870 + ... + 108293911.

It is an arithmetic number, because the mean of its divisors is an integer number (55337667301).

Almost surely, 2^221134082401 is an apocalyptic number.

It is an amenable number.

221134082401 is a deficient number, since it is larger than the sum of its proper divisors (216586803).

221134082401 is a wasteful number, since it uses less digits than its factorization.

221134082401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216586802.

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 221134082401 in words is "two hundred twenty-one billion, one hundred thirty-four million, eighty-two thousand, four hundred one".