1122170720521 has 16 divisors (see below), whose sum is σ = 1174180896000. Its totient is φ = 1070432782848.

The previous prime is 1122170720507. The next prime is 1122170720537. The reversal of 1122170720521 is 1250270712211.

It is not a de Polignac number, because 1122170720521 - 2¹³ = 1122170712329 is a prime.

It is a super-2 number, since 2×1122170720521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122170720921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12865585 + ... + 12952513.

It is an arithmetic number, because the mean of its divisors is an integer number (73386306000).

Almost surely, 2^{1122170720521} is an apocalyptic number.

It is an amenable number.

1122170720521 is a deficient number, since it is larger than the sum of its proper divisors (52010175479).

1122170720521 is an equidigital number, since it uses as much as digits as its factorization.

1122170720521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88488.

The product of its (nonzero) digits is 3920, while the sum is 31.

The spelling of 1122170720521 in words is "one trillion, one hundred twenty-two billion, one hundred seventy million, seven hundred twenty thousand, five hundred twenty-one".