1220102209978 has 16 divisors (see below), whose sum is σ = 1938519100224. Its totient is φ = 573955462080.

The previous prime is 1220102209969. The next prime is 1220102209987. The reversal of 1220102209978 is 8799022010221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220102209969) and next prime (1220102209987).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6477150 + ... + 6662857.

It is an arithmetic number, because the mean of its divisors is an integer number (121157443764).

Almost surely, 2^{1220102209978} is an apocalyptic number.

1220102209978 is a deficient number, since it is larger than the sum of its proper divisors (718416890246).

1220102209978 is a wasteful number, since it uses less digits than its factorization.

1220102209978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142757.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 1220102209978 in words is "one trillion, two hundred twenty billion, one hundred two million, two hundred nine thousand, nine hundred seventy-eight".