2102200202122 has 4 divisors (see below), whose sum is σ = 3153300303186. Its totient is φ = 1051100101060.

The previous prime is 2102200202117. The next prime is 2102200202149. The reversal of 2102200202122 is 2212020022012.

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., 1990190169081 + 112010033041 = 1410741^2 + 334679^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2102200202096 and 2102200202105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525550050529 + ... + 525550050532.

Almost surely, 2^{2102200202122} is an apocalyptic number.

2102200202122 is a deficient number, since it is larger than the sum of its proper divisors (1051100101064).

2102200202122 is a wasteful number, since it uses less digits than its factorization.

2102200202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051100101063.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2102200202122 its reverse (2212020022012), we get a palindrome (4314220224134).

The spelling of 2102200202122 in words is "two trillion, one hundred two billion, two hundred million, two hundred two thousand, one hundred twenty-two".