221434323041 has 4 divisors (see below), whose sum is σ = 221583841284. Its totient is φ = 221284804800.

The previous prime is 221434323023. The next prime is 221434323079. The reversal of 221434323041 is 140323434122.

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 135700140625 + 85734182416 = 368375^2 + 292804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221434323041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221434322995 and 221434323013.

It is not an unprimeable number, because it can be changed into a prime (221434323241) 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, 74756900 + ... + 74759861.

It is an arithmetic number, because the mean of its divisors is an integer number (55395960321).

Almost surely, 2^221434323041 is an apocalyptic number.

It is an amenable number.

221434323041 is a deficient number, since it is larger than the sum of its proper divisors (149518243).

221434323041 is a wasteful number, since it uses less digits than its factorization.

221434323041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149518242.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 221434323041 its reverse (140323434122), we get a palindrome (361757757163).

The spelling of 221434323041 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred twenty-three thousand, forty-one".