2102213122 has 4 divisors (see below), whose sum is σ = 3153319686. Its totient is φ = 1051106560.

The previous prime is 2102213083. The next prime is 2102213123. The reversal of 2102213122 is 2213122012.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1317036681 + 785176441 = 36291^2 + 28021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2102213096 and 2102213105.

It is not an unprimeable number, because it can be changed into a prime (2102213123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525553279 + ... + 525553282.

Almost surely, 2^2102213122 is an apocalyptic number.

2102213122 is a deficient number, since it is larger than the sum of its proper divisors (1051106564).

2102213122 is a wasteful number, since it uses less digits than its factorization.

2102213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051106563.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2102213122 is about 45849.8977316199. The cubic root of 2102213122 is about 1281.0288606898.

Adding to 2102213122 its reverse (2213122012), we get a palindrome (4315335134).

The spelling of 2102213122 in words is "two billion, one hundred two million, two hundred thirteen thousand, one hundred twenty-two".