223120400212 has 12 divisors (see below), whose sum is σ = 391207282816. Its totient is φ = 111346890840.

The previous prime is 223120400207. The next prime is 223120400291. The reversal of 223120400212 is 212004021322.

223120400212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223120400212³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223120400212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53324964 + ... + 53329147.

Almost surely, 2^223120400212 is an apocalyptic number.

It is an amenable number.

223120400212 is a deficient number, since it is larger than the sum of its proper divisors (168086882604).

223120400212 is a wasteful number, since it uses less digits than its factorization.

223120400212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106654638 (or 106654636 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 223120400212 its reverse (212004021322), we get a palindrome (435124421534).

The spelling of 223120400212 in words is "two hundred twenty-three billion, one hundred twenty million, four hundred thousand, two hundred twelve".