222397812450 has 486 divisors, whose sum is σ = 687005343297. Its totient is φ = 51540350400.

The previous prime is 222397812433. The next prime is 222397812451. The reversal of 222397812450 is 54218793222.

It can be written as a sum of positive squares in 2 ways, for example, as 217949856201 + 4447956249 = 466851^2 + 66693^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333465.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 222397812396 and 222397812405.

It is not an unprimeable number, because it can be changed into a prime (222397812451) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 4731868327 + ... + 4731868373.

Almost surely, 2^222397812450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222397812450

222397812450 is an abundant number, since it is smaller than the sum of its proper divisors (464607530847).

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

222397812450 is a wasteful number, since it uses less digits than its factorization.

222397812450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 222397812450 in words is "two hundred twenty-two billion, three hundred ninety-seven million, eight hundred twelve thousand, four hundred fifty".