2101222122 has 32 divisors (see below), whose sum is σ = 4448109120. Its totient is φ = 659871360.

The previous prime is 2101222121. The next prime is 2101222163. The reversal of 2101222122 is 2212221012.

It is not an unprimeable number, because it can be changed into a prime (2101222121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30283 + ... + 71550.

It is an arithmetic number, because the mean of its divisors is an integer number (139003410).

Almost surely, 2^2101222122 is an apocalyptic number.

2101222122 is an abundant number, since it is smaller than the sum of its proper divisors (2346886998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101222122 is a wasteful number, since it uses less digits than its factorization.

2101222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102038.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2101222122 is about 45839.0894543074. The cubic root of 2101222122 is about 1280.8275333166.

Adding to 2101222122 its reverse (2212221012), we get a palindrome (4313443134).

It can be divided in two parts, 21012 and 22122, that added together give a palindrome (43134).

The spelling of 2101222122 in words is "two billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-two".