2123220355 has 16 divisors (see below), whose sum is σ = 2790767520. Its totient is φ = 1543532032.

The previous prime is 2123220343. The next prime is 2123220371. The reversal of 2123220355 is 5530223212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123220355 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 428209 + ... + 433138.

It is an arithmetic number, because the mean of its divisors is an integer number (174422970).

Almost surely, 2^2123220355 is an apocalyptic number.

2123220355 is a deficient number, since it is larger than the sum of its proper divisors (667547165).

2123220355 is a wasteful number, since it uses less digits than its factorization.

2123220355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861398.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2123220355 is about 46078.4152830802. The cubic root of 2123220355 is about 1285.2817956077.

Adding to 2123220355 its reverse (5530223212), we get a palindrome (7653443567).

The spelling of 2123220355 in words is "two billion, one hundred twenty-three million, two hundred twenty thousand, three hundred fifty-five".