2215555235123 has 4 divisors (see below), whose sum is σ = 2215652129808. Its totient is φ = 2215458340440.

The previous prime is 2215555235119. The next prime is 2215555235191. The reversal of 2215555235123 is 3215325555122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2215555235123 - 2² = 2215555235119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215555235323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48413036 + ... + 48458777.

It is an arithmetic number, because the mean of its divisors is an integer number (553913032452).

Almost surely, 2^{2215555235123} is an apocalyptic number.

2215555235123 is a deficient number, since it is larger than the sum of its proper divisors (96894685).

2215555235123 is an equidigital number, since it uses as much as digits as its factorization.

2215555235123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96894684.

The product of its digits is 450000, while the sum is 41.

The spelling of 2215555235123 in words is "two trillion, two hundred fifteen billion, five hundred fifty-five million, two hundred thirty-five thousand, one hundred twenty-three".