434232311221 has 4 divisors (see below), whose sum is σ = 444823343244. Its totient is φ = 423641279200.

The previous prime is 434232311209. The next prime is 434232311257. The reversal of 434232311221 is 122113232434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122113232434 = 2 ⋅61056616217.

It can be written as a sum of positive squares in 2 ways, for example, as 32670562500 + 401561748721 = 180750^2 + 633689^2 .

It is a cyclic number.

It is not a de Polignac number, because 434232311221 - 2²¹ = 434230214069 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 434232311221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434232351221) 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, 5295515950 + ... + 5295516031.

It is an arithmetic number, because the mean of its divisors is an integer number (111205835811).

Almost surely, 2^434232311221 is an apocalyptic number.

434232311221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

434232311221 is a deficient number, since it is larger than the sum of its proper divisors (10591032023).

434232311221 is a wasteful number, since it uses less digits than its factorization.

434232311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10591032022.

The product of its digits is 6912, while the sum is 28.

Adding to 434232311221 its reverse (122113232434), we get a palindrome (556345543655).

The spelling of 434232311221 in words is "four hundred thirty-four billion, two hundred thirty-two million, three hundred eleven thousand, two hundred twenty-one".