1220405520010 has 16 divisors (see below), whose sum is σ = 2196757780200. Its totient is φ = 488156020416.

The previous prime is 1220405519989. The next prime is 1220405520053. The reversal of 1220405520010 is 100255040221.

It can be written as a sum of positive squares in 4 ways, for example, as 935547414169 + 284858105841 = 967237^2 + 533721^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 102136 + ... + 1565644.

Almost surely, 2^{1220405520010} is an apocalyptic number.

1220405520010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220405520010 is a deficient number, since it is larger than the sum of its proper divisors (976352260190).

1220405520010 is a wasteful number, since it uses less digits than its factorization.

1220405520010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546905.

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 1220405520010 in words is "one trillion, two hundred twenty billion, four hundred five million, five hundred twenty thousand, ten".