1220357370717 has 24 divisors (see below), whose sum is σ = 1814097657216. Its totient is φ = 789957626976.

The previous prime is 1220357370697. The next prime is 1220357370721. The reversal of 1220357370717 is 7170737530221.

1220357370717 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 3 + 573 + 7 + 0 + 71 + 7 = 666.

It is not a de Polignac number, because 1220357370717 - 2⁶ = 1220357370653 is a prime.

It is a super-2 number, since 2×1220357370717² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220357370217) 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 23 ways as a sum of consecutive naturals, for example, 3600393 + ... + 3924734.

It is an arithmetic number, because the mean of its divisors is an integer number (75587402384).

Almost surely, 2^{1220357370717} is an apocalyptic number.

It is an amenable number.

1220357370717 is a deficient number, since it is larger than the sum of its proper divisors (593740286499).

1220357370717 is a wasteful number, since it uses less digits than its factorization.

1220357370717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7525657 (or 7525654 counting only the distinct ones).

The product of its (nonzero) digits is 432180, while the sum is 45.

The spelling of 1220357370717 in words is "one trillion, two hundred twenty billion, three hundred fifty-seven million, three hundred seventy thousand, seven hundred seventeen".