2212950778 has 4 divisors (see below), whose sum is σ = 3319426170. Its totient is φ = 1106475388.

The previous prime is 2212950739. The next prime is 2212950793. The reversal of 2212950778 is 8770592122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1314570049 + 898380729 = 36257^2 + 29973^2 .

It is a super-2 number, since 2×2212950778² = 9794302291701610568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553237693 + ... + 553237696.

Almost surely, 2^2212950778 is an apocalyptic number.

2212950778 is a deficient number, since it is larger than the sum of its proper divisors (1106475392).

2212950778 is a wasteful number, since it uses less digits than its factorization.

2212950778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106475391.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 2212950778 is about 47042.0107776018. The cubic root of 2212950778 is about 1303.1385267689.

The spelling of 2212950778 in words is "two billion, two hundred twelve million, nine hundred fifty thousand, seven hundred seventy-eight".