212223022404 has 12 divisors (see below), whose sum is σ = 495187052304. Its totient is φ = 70741007464.

The previous prime is 212223022397. The next prime is 212223022409. The reversal of 212223022404 is 404220322212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×212223022404² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212223022409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8842625922 + ... + 8842625945.

It is an arithmetic number, because the mean of its divisors is an integer number (41265587692).

Almost surely, 2^212223022404 is an apocalyptic number.

It is an amenable number.

212223022404 is an abundant number, since it is smaller than the sum of its proper divisors (282964029900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212223022404 is a wasteful number, since it uses less digits than its factorization.

212223022404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17685251874 (or 17685251872 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212223022404 its reverse (404220322212), we get a palindrome (616443344616).

The spelling of 212223022404 in words is "two hundred twelve billion, two hundred twenty-three million, twenty-two thousand, four hundred four".