1210055145505 has 16 divisors (see below), whose sum is σ = 1462738273920. Its totient is φ = 960955400448.

The previous prime is 1210055145421. The next prime is 1210055145511. The reversal of 1210055145505 is 5055415500121.

It is a cyclic number.

It is not a de Polignac number, because 1210055145505 - 2¹⁵ = 1210055112737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1253640 + ... + 1997929.

It is an arithmetic number, because the mean of its divisors is an integer number (91421142120).

Almost surely, 2^{1210055145505} is an apocalyptic number.

It is an amenable number.

1210055145505 is a deficient number, since it is larger than the sum of its proper divisors (252683128415).

1210055145505 is a wasteful number, since it uses less digits than its factorization.

1210055145505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252120.

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 1210055145505 in words is "one trillion, two hundred ten billion, fifty-five million, one hundred forty-five thousand, five hundred five".