2212120255 has 4 divisors (see below), whose sum is σ = 2654544312. Its totient is φ = 1769696200.

The previous prime is 2212120249. The next prime is 2212120303. The reversal of 2212120255 is 5520212122.

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

It is a de Polignac number, because none of the positive numbers 2^k-2212120255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221212021 + ... + 221212030.

It is an arithmetic number, because the mean of its divisors is an integer number (663636078).

Almost surely, 2^2212120255 is an apocalyptic number.

2212120255 is a deficient number, since it is larger than the sum of its proper divisors (442424057).

2212120255 is an equidigital number, since it uses as much as digits as its factorization.

2212120255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442424056.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2212120255 is about 47033.1824885368. The cubic root of 2212120255 is about 1302.9754832356.

Adding to 2212120255 its reverse (5520212122), we get a palindrome (7732332377).

The spelling of 2212120255 in words is "two billion, two hundred twelve million, one hundred twenty thousand, two hundred fifty-five".