222131310400 has 168 divisors, whose sum is σ = 586209221280. Its totient is φ = 82587248640.

The previous prime is 222131310397. The next prime is 222131310439. The reversal of 222131310400 is 4013131222.

It is a happy number.

It is a super-2 number, since 2×222131310400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1542267 + ... + 1680133.

Almost surely, 2^222131310400 is an apocalyptic number.

222131310400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222131310400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293104610640).

222131310400 is an abundant number, since it is smaller than the sum of its proper divisors (364077910880).

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

222131310400 is a wasteful number, since it uses less digits than its factorization.

222131310400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137961 (or 137946 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222131310400 its reverse (4013131222), we get a palindrome (226144441622).

The spelling of 222131310400 in words is "two hundred twenty-two billion, one hundred thirty-one million, three hundred ten thousand, four hundred".