223403021301421 has 32 divisors (see below), whose sum is σ = 247416568947968. Its totient is φ = 200379767639040.

The previous prime is 223403021301413. The next prime is 223403021301461. The reversal of 223403021301421 is 124103120304322.

It is a cyclic number.

It is not a de Polignac number, because 223403021301421 - 2³ = 223403021301413 is a prime.

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 223403021301421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223403021301461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6874557445 + ... + 6874589941.

It is an arithmetic number, because the mean of its divisors is an integer number (7731767779624).

Almost surely, 2^{223403021301421} is an apocalyptic number.

It is an amenable number.

223403021301421 is a deficient number, since it is larger than the sum of its proper divisors (24013547646547).

223403021301421 is a wasteful number, since it uses less digits than its factorization.

223403021301421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50981.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 223403021301421 its reverse (124103120304322), we get a palindrome (347506141605743).

The spelling of 223403021301421 in words is "two hundred twenty-three trillion, four hundred three billion, twenty-one million, three hundred one thousand, four hundred twenty-one".