74230311212221 has 4 divisors (see below), whose sum is σ = 74321840573344. Its totient is φ = 74138781851100.

The previous prime is 74230311212219. The next prime is 74230311212231. The reversal of 74230311212221 is 12221211303247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74230311212221 - 2¹ = 74230311212219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74230311212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45764679345 + ... + 45764680966.

It is an arithmetic number, because the mean of its divisors is an integer number (18580460143336).

Almost surely, 2^{74230311212221} is an apocalyptic number.

It is an amenable number.

74230311212221 is a deficient number, since it is larger than the sum of its proper divisors (91529361123).

74230311212221 is an equidigital number, since it uses as much as digits as its factorization.

74230311212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91529361122.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 74230311212221 its reverse (12221211303247), we get a palindrome (86451522515468).

The spelling of 74230311212221 in words is "seventy-four trillion, two hundred thirty billion, three hundred eleven million, two hundred twelve thousand, two hundred twenty-one".