223012011421 has 24 divisors (see below), whose sum is σ = 241990140600. Its totient is φ = 204808375296.

The previous prime is 223012011401. The next prime is 223012011433. The reversal of 223012011421 is 124110210322.

It can be written as a sum of positive squares in 4 ways, for example, as 6144835321 + 216867176100 = 78389^2 + 465690^2 .

It is not a de Polignac number, because 223012011421 - 2⁵ = 223012011389 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 (223012011401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38125305 + ... + 38131153.

It is an arithmetic number, because the mean of its divisors is an integer number (10082922525).

Almost surely, 2^223012011421 is an apocalyptic number.

It is an amenable number.

223012011421 is a deficient number, since it is larger than the sum of its proper divisors (18978129179).

223012011421 is a wasteful number, since it uses less digits than its factorization.

223012011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165 (or 7122 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 223012011421 its reverse (124110210322), we get a palindrome (347122221743).

The spelling of 223012011421 in words is "two hundred twenty-three billion, twelve million, eleven thousand, four hundred twenty-one".