1222464478161 has 8 divisors (see below), whose sum is σ = 1635712188640. Its totient is φ = 812096543232.

The previous prime is 1222464478159. The next prime is 1222464478177. The reversal of 1222464478161 is 1618744642221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222464478161 - 2¹ = 1222464478159 is a prime.

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 1222464478161.

It is not an unprimeable number, because it can be changed into a prime (1222464478061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719942896 + ... + 719944593.

It is an arithmetic number, because the mean of its divisors is an integer number (204464023580).

Almost surely, 2^{1222464478161} is an apocalyptic number.

It is an amenable number.

1222464478161 is a deficient number, since it is larger than the sum of its proper divisors (413247710479).

1222464478161 is a wasteful number, since it uses less digits than its factorization.

1222464478161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439887775.

The product of its digits is 1032192, while the sum is 48.

The spelling of 1222464478161 in words is "one trillion, two hundred twenty-two billion, four hundred sixty-four million, four hundred seventy-eight thousand, one hundred sixty-one".