222277781250 has 378 divisors, whose sum is σ = 705836883141. Its totient is φ = 50406300000.

The previous prime is 222277781203. The next prime is 222277781281. The reversal of 222277781250 is 52187772222.

It can be written as a sum of positive squares in 4 ways, for example, as 37904585481 + 184373195769 = 194691^2 + 429387^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333375.

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 = 222277781196 and 222277781205.

It is an unprimeable number.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 1750218687 + ... + 1750218813.

Almost surely, 2^222277781250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222277781250

222277781250 is an abundant number, since it is smaller than the sum of its proper divisors (483559101891).

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

222277781250 is an frugal number, since it uses more digits than its factorization.

222277781250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 222277781250 in words is "two hundred twenty-two billion, two hundred seventy-seven million, seven hundred eighty-one thousand, two hundred fifty".