1220665303100 has 36 divisors (see below), whose sum is σ = 2734290285888. Its totient is φ = 472515600000.

The previous prime is 1220665303097. The next prime is 1220665303243. The reversal of 1220665303100 is 13035660221.

It is a super-2 number, since 2×1220665303100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 196878401 + ... + 196884600.

Almost surely, 2^{1220665303100} is an apocalyptic number.

1220665303100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220665303100 is an abundant number, since it is smaller than the sum of its proper divisors (1513624982788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220665303100 is a wasteful number, since it uses less digits than its factorization.

1220665303100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393763046 (or 393763039 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 1220665303100 in words is "one trillion, two hundred twenty billion, six hundred sixty-five million, three hundred three thousand, one hundred".