223400210421 has 8 divisors (see below), whose sum is σ = 310817684160. Its totient is φ = 142458105152.

The previous prime is 223400210419. The next prime is 223400210497. The reversal of 223400210421 is 124012004322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223400210421 - 2¹ = 223400210419 is a prime.

It is a super-2 number, since 2×223400210421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223400200421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618842036 + ... + 1618842173.

It is an arithmetic number, because the mean of its divisors is an integer number (38852210520).

Almost surely, 2^223400210421 is an apocalyptic number.

It is an amenable number.

223400210421 is a deficient number, since it is larger than the sum of its proper divisors (87417473739).

223400210421 is a wasteful number, since it uses less digits than its factorization.

223400210421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237684235.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 223400210421 its reverse (124012004322), we get a palindrome (347412214743).

The spelling of 223400210421 in words is "two hundred twenty-three billion, four hundred million, two hundred ten thousand, four hundred twenty-one".