1220656610011 has 8 divisors (see below), whose sum is σ = 1233412853904. Its totient is φ = 1207903879680.

The previous prime is 1220656610009. The next prime is 1220656610023. The reversal of 1220656610011 is 1100166560221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220656610011 - 2¹ = 1220656610009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220656610711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177025 + ... + 1572466.

It is an arithmetic number, because the mean of its divisors is an integer number (154176606738).

Almost surely, 2^{1220656610011} is an apocalyptic number.

1220656610011 is a deficient number, since it is larger than the sum of its proper divisors (12756243893).

1220656610011 is an equidigital number, since it uses as much as digits as its factorization.

1220656610011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756781.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 1220656610011 in words is "one trillion, two hundred twenty billion, six hundred fifty-six million, six hundred ten thousand, eleven".