2215122112771 has 4 divisors (see below), whose sum is σ = 2311431769872. Its totient is φ = 2118812455672.

The previous prime is 2215122112747. The next prime is 2215122112823. The reversal of 2215122112771 is 1772112215122.

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 2215122112771 - 2²³ = 2215113724163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215122142771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48154828516 + ... + 48154828561.

It is an arithmetic number, because the mean of its divisors is an integer number (577857942468).

Almost surely, 2^{2215122112771} is an apocalyptic number.

2215122112771 is a deficient number, since it is larger than the sum of its proper divisors (96309657101).

2215122112771 is an equidigital number, since it uses as much as digits as its factorization.

2215122112771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96309657100.

The product of its digits is 7840, while the sum is 34.

Adding to 2215122112771 its reverse (1772112215122), we get a palindrome (3987234327893).

The spelling of 2215122112771 in words is "two trillion, two hundred fifteen billion, one hundred twenty-two million, one hundred twelve thousand, seven hundred seventy-one".