2200222778 has 8 divisors (see below), whose sum is σ = 3554206068. Its totient is φ = 1015487424.

The previous prime is 2200222777. The next prime is 2200222853. The reversal of 2200222778 is 8772220022.

It can be written as a sum of positive squares in 2 ways, for example, as 2137860169 + 62362609 = 46237^2 + 7897^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2200222777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42311951 + ... + 42312002.

Almost surely, 2^2200222778 is an apocalyptic number.

2200222778 is a deficient number, since it is larger than the sum of its proper divisors (1353983290).

2200222778 is a wasteful number, since it uses less digits than its factorization.

2200222778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84623968.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 2200222778 is about 46906.5323595765. The cubic root of 2200222778 is about 1300.6353458486.

The spelling of 2200222778 in words is "two billion, two hundred million, two hundred twenty-two thousand, seven hundred seventy-eight".