223212565426 has 8 divisors (see below), whose sum is σ = 335089521900. Its totient is φ = 111516058128.

The previous prime is 223212565423. The next prime is 223212565451. The reversal of 223212565426 is 624565212322.

It can be written as a sum of positive squares in 2 ways, for example, as 207069592401 + 16142973025 = 455049^2 + 127055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×223212565426³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (223212565423) 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, 45109201 + ... + 45114148.

Almost surely, 2^223212565426 is an apocalyptic number.

223212565426 is a deficient number, since it is larger than the sum of its proper divisors (111876956474).

223212565426 is a wasteful number, since it uses less digits than its factorization.

223212565426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90224588.

The product of its digits is 345600, while the sum is 40.

Adding to 223212565426 its reverse (624565212322), we get a palindrome (847777777748).

The spelling of 223212565426 in words is "two hundred twenty-three billion, two hundred twelve million, five hundred sixty-five thousand, four hundred twenty-six".