223012140155281 has 3 divisors (see below), whose sum is σ = 223012155088873. Its totient is φ = 223012125221690.

The previous prime is 223012140155249. The next prime is 223012140155291. The reversal of 223012140155281 is 182551041210322.

The square root of 223012140155281 is 14933591.

It is a perfect power (a square), and thus also a powerful 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 is not a de Polignac number, because 223012140155281 - 2⁵ = 223012140155249 is a prime.

It is a super-2 number, since 2×223012140155281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223012140155281.

It is not an unprimeable number, because it can be changed into a prime (223012140155291) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7466796 + ... + 22400386.

Almost surely, 2^{223012140155281} is an apocalyptic number.

223012140155281 is the 14933591-st square number.

223012140155281 is the 7466796-th centered octagonal number.

It is an amenable number.

223012140155281 is a deficient number, since it is larger than the sum of its proper divisors (14933592).

223012140155281 is an frugal number, since it uses more digits than its factorization.

223012140155281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29867182 (or 14933591 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 223012140155281 in words is "two hundred twenty-three trillion, twelve billion, one hundred forty million, one hundred fifty-five thousand, two hundred eighty-one".