223402111033421 has 4 divisors (see below), whose sum is σ = 223402142684412. Its totient is φ = 223402079382432.

The previous prime is 223402111033417. The next prime is 223402111033433. The reversal of 223402111033421 is 124330111204322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35349434000521 + 188052677032900 = 5945539^2 + 13713230^2 .

It is a cyclic number.

It is not a de Polignac number, because 223402111033421 - 2² = 223402111033417 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 (223402111033471) 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, 112145 + ... + 21138041.

It is an arithmetic number, because the mean of its divisors is an integer number (55850535671103).

Almost surely, 2^{223402111033421} is an apocalyptic number.

It is an amenable number.

223402111033421 is a deficient number, since it is larger than the sum of its proper divisors (31650991).

223402111033421 is a wasteful number, since it uses less digits than its factorization.

223402111033421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31650990.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 223402111033421 its reverse (124330111204322), we get a palindrome (347732222237743).

The spelling of 223402111033421 in words is "two hundred twenty-three trillion, four hundred two billion, one hundred eleven million, thirty-three thousand, four hundred twenty-one".