1220003299978 has 8 divisors (see below), whose sum is σ = 1860005031300. Its totient is φ = 600001622880.

The previous prime is 1220003299973. The next prime is 1220003299979. The reversal of 1220003299978 is 8799923000221.

It can be written as a sum of positive squares in 2 ways, for example, as 1220001984369 + 1315609 = 1104537^2 + 1147^2 .

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 (1220003299973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000013403 + ... + 5000013646.

Almost surely, 2^{1220003299978} is an apocalyptic number.

1220003299978 is a deficient number, since it is larger than the sum of its proper divisors (640001731322).

1220003299978 is a wasteful number, since it uses less digits than its factorization.

1220003299978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000027112.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 1220003299978 in words is "one trillion, two hundred twenty billion, three million, two hundred ninety-nine thousand, nine hundred seventy-eight".