2211210202122 has 48 divisors (see below), whose sum is σ = 4860321685128. Its totient is φ = 726413875200.

The previous prime is 2211210202079. The next prime is 2211210202151. The reversal of 2211210202122 is 2212020121122.

It is a happy number.

2211210202122 is a `hidden beast` number, since 221 + 1 + 210 + 20 + 212 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 927790841961 + 1283419360161 = 963219^2 + 1132881^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2211210202095 and 2211210202104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1062778 + ... + 2356250.

Almost surely, 2^{2211210202122} is an apocalyptic number.

2211210202122 is an abundant number, since it is smaller than the sum of its proper divisors (2649111483006).

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

2211210202122 is a wasteful number, since it uses less digits than its factorization.

2211210202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294855 (or 1294852 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2211210202122 its reverse (2212020121122), we get a palindrome (4423230323244).

The spelling of 2211210202122 in words is "two trillion, two hundred eleven billion, two hundred ten million, two hundred two thousand, one hundred twenty-two".