223212021001 has 4 divisors (see below), whose sum is σ = 223450241812. Its totient is φ = 222973800192.

The previous prime is 223212020959. The next prime is 223212021007. The reversal of 223212021001 is 100120212322.

It is a happy number.

223212021001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11450070025 + 211761950976 = 107005^2 + 460176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223212021001 is a prime.

It is a super-3 number, since 3×223212021001³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223212021007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119109000 + ... + 119110873.

It is an arithmetic number, because the mean of its divisors is an integer number (55862560453).

Almost surely, 2^223212021001 is an apocalyptic number.

It is an amenable number.

223212021001 is a deficient number, since it is larger than the sum of its proper divisors (238220811).

223212021001 is an equidigital number, since it uses as much as digits as its factorization.

223212021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238220810.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 223212021001 its reverse (100120212322), we get a palindrome (323332233323).

The spelling of 223212021001 in words is "two hundred twenty-three billion, two hundred twelve million, twenty-one thousand, one".