223134144021 has 12 divisors (see below), whose sum is σ = 322783791148. Its totient is φ = 148535057664.

The previous prime is 223134143989. The next prime is 223134144031. The reversal of 223134144021 is 120441431322.

223134144021 is a `hidden beast` number, since 223 + 1 + 3 + 414 + 4 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 141215117796 + 81919026225 = 375786^2 + 286215^2 .

It is not a de Polignac number, because 223134144021 - 2⁵ = 223134143989 is a prime.

It is a super-3 number, since 3×223134144021³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223134144031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18413470 + ... + 18425583.

Almost surely, 2^223134144021 is an apocalyptic number.

It is an amenable number.

223134144021 is a deficient number, since it is larger than the sum of its proper divisors (99649647127).

223134144021 is a wasteful number, since it uses less digits than its factorization.

223134144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36839732 (or 36839729 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 223134144021 its reverse (120441431322), we get a palindrome (343575575343).

The spelling of 223134144021 in words is "two hundred twenty-three billion, one hundred thirty-four million, one hundred forty-four thousand, twenty-one".