2217012404145 has 128 divisors (see below), whose sum is σ = 4516392038400. Its totient is φ = 920614947840.

The previous prime is 2217012404099. The next prime is 2217012404147. The reversal of 2217012404145 is 5414042107122.

It is not a de Polignac number, because 2217012404145 - 2⁸ = 2217012403889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2217012404147) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 73388614 + ... + 73418816.

It is an arithmetic number, because the mean of its divisors is an integer number (35284312800).

Almost surely, 2^{2217012404145} is an apocalyptic number.

It is an amenable number.

2217012404145 is an abundant number, since it is smaller than the sum of its proper divisors (2299379634255).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217012404145 is a wasteful number, since it uses less digits than its factorization.

2217012404145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31540 (or 31526 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 2217012404145 in words is "two trillion, two hundred seventeen billion, twelve million, four hundred four thousand, one hundred forty-five".