1220106543455 has 8 divisors (see below), whose sum is σ = 1527785584992. Its totient is φ = 933646746208.

The previous prime is 1220106543451. The next prime is 1220106543521. The reversal of 1220106543455 is 5543456010221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220106543455 - 2² = 1220106543451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220106543451) 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, 5304810944 + ... + 5304811173.

It is an arithmetic number, because the mean of its divisors is an integer number (190973198124).

Almost surely, 2^{1220106543455} is an apocalyptic number.

1220106543455 is a deficient number, since it is larger than the sum of its proper divisors (307679041537).

1220106543455 is a wasteful number, since it uses less digits than its factorization.

1220106543455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10609622145.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 1220106543455 in words is "one trillion, two hundred twenty billion, one hundred six million, five hundred forty-three thousand, four hundred fifty-five".