1220278779933 has 8 divisors (see below), whose sum is σ = 1630567742496. Its totient is φ = 811754502000.

The previous prime is 1220278779931. The next prime is 1220278779977. The reversal of 1220278779933 is 3399778720221.

It is a happy number.

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

It is not a de Polignac number, because 1220278779933 - 2¹ = 1220278779931 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220278779931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441169543 + ... + 441172308.

It is an arithmetic number, because the mean of its divisors is an integer number (203820967812).

Almost surely, 2^{1220278779933} is an apocalyptic number.

It is an amenable number.

1220278779933 is a deficient number, since it is larger than the sum of its proper divisors (410288962563).

1220278779933 is an equidigital number, since it uses as much as digits as its factorization.

1220278779933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882342315.

The product of its (nonzero) digits is 16003008, while the sum is 60.

The spelling of 1220278779933 in words is "one trillion, two hundred twenty billion, two hundred seventy-eight million, seven hundred seventy-nine thousand, nine hundred thirty-three".