213204400222 has 32 divisors (see below), whose sum is σ = 354663264384. Its totient is φ = 95305183200.

The previous prime is 213204400169. The next prime is 213204400223. The reversal of 213204400222 is 222004402312.

It is a super-2 number, since 2×213204400222² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 213204400193 and 213204400202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213204400223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10063813 + ... + 10084975.

It is an arithmetic number, because the mean of its divisors is an integer number (11083227012).

Almost surely, 2^213204400222 is an apocalyptic number.

213204400222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213204400222 is a deficient number, since it is larger than the sum of its proper divisors (141458864162).

213204400222 is a wasteful number, since it uses less digits than its factorization.

213204400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28744.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 213204400222 its reverse (222004402312), we get a palindrome (435208802534).

The spelling of 213204400222 in words is "two hundred thirteen billion, two hundred four million, four hundred thousand, two hundred twenty-two".