222320400210 has 96 divisors (see below), whose sum is σ = 583411269168. Its totient is φ = 58734305280.

The previous prime is 222320400193. The next prime is 222320400293. The reversal of 222320400210 is 12004023222.

222320400210 is a `hidden beast` number, since 2 + 22 + 32 + 0 + 400 + 210 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 159433302681 + 62887097529 = 399291^2 + 250773^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34300170 + ... + 34306650.

Almost surely, 2^222320400210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222320400210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291705634584).

222320400210 is an abundant number, since it is smaller than the sum of its proper divisors (361090868958).

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

222320400210 is a wasteful number, since it uses less digits than its factorization.

222320400210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9980 (or 9977 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 222320400210 its reverse (12004023222), we get a palindrome (234324423432).

The spelling of 222320400210 in words is "two hundred twenty-two billion, three hundred twenty million, four hundred thousand, two hundred ten".