1220609214181 has 16 divisors (see below), whose sum is σ = 1404511995904. Its totient is φ = 1039097832624.

The previous prime is 1220609214127. The next prime is 1220609214193. The reversal of 1220609214181 is 1814129060221.

It is a cyclic number.

It is not a de Polignac number, because 1220609214181 - 2²⁷ = 1220474996453 is a prime.

It is a super-2 number, since 2×1220609214181² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220609214181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220609214281) 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, 1281376 + ... + 2020678.

It is an arithmetic number, because the mean of its divisors is an integer number (87781999744).

Almost surely, 2^{1220609214181} is an apocalyptic number.

It is an amenable number.

1220609214181 is a deficient number, since it is larger than the sum of its proper divisors (183902781723).

1220609214181 is a wasteful number, since it uses less digits than its factorization.

1220609214181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740920.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 1220609214181 in words is "one trillion, two hundred twenty billion, six hundred nine million, two hundred fourteen thousand, one hundred eighty-one".