212223234004 has 24 divisors (see below), whose sum is σ = 371957594400. Its totient is φ = 105949720800.

The previous prime is 212223233987. The next prime is 212223234089. The reversal of 212223234004 is 400432322212.

It is a super-2 number, since 2×212223234004² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212223234004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12761607 + ... + 12778225.

It is an arithmetic number, because the mean of its divisors is an integer number (15498233100).

Almost surely, 2^212223234004 is an apocalyptic number.

It is an amenable number.

212223234004 is a deficient number, since it is larger than the sum of its proper divisors (159734360396).

212223234004 is a wasteful number, since it uses less digits than its factorization.

212223234004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21303 (or 21301 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 212223234004 its reverse (400432322212), we get a palindrome (612655556216).

The spelling of 212223234004 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred thirty-four thousand, four".