2128801222 has 4 divisors (see below), whose sum is σ = 3193201836. Its totient is φ = 1064400610.

The previous prime is 2128801201. The next prime is 2128801223. The reversal of 2128801222 is 2221088212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128801223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532200304 + ... + 532200307.

It is an arithmetic number, because the mean of its divisors is an integer number (798300459).

Almost surely, 2^2128801222 is an apocalyptic number.

2128801222 is a deficient number, since it is larger than the sum of its proper divisors (1064400614).

2128801222 is a wasteful number, since it uses less digits than its factorization.

2128801222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064400613.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 2128801222 is about 46138.9339061925. The cubic root of 2128801222 is about 1286.4069278769.

Adding to 2128801222 its reverse (2221088212), we get a palindrome (4349889434).

The spelling of 2128801222 in words is "two billion, one hundred twenty-eight million, eight hundred one thousand, two hundred twenty-two".