2111202220122 has 12 divisors (see below), whose sum is σ = 4574271476970. Its totient is φ = 703734073368.

The previous prime is 2111202220103. The next prime is 2111202220129. The reversal of 2111202220122 is 2210222021112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1586488874481 + 524713345641 = 1259559^2 + 724371^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 117289012229 = 2111202220122 / (2 + 1 + 1 + 1 + 2 + 0 + 2 + 2 + 2 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2111202220095 and 2111202220104.

It is not an unprimeable number, because it can be changed into a prime (2111202220129) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 58644506097 + ... + 58644506132.

Almost surely, 2^{2111202220122} is an apocalyptic number.

2111202220122 is an abundant number, since it is smaller than the sum of its proper divisors (2463069256848).

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

2111202220122 is a wasteful number, since it uses less digits than its factorization.

2111202220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117289012237 (or 117289012234 counting only the distinct ones).

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

Adding to 2111202220122 its reverse (2210222021112), we get a palindrome (4321424241234).

The spelling of 2111202220122 in words is "two trillion, one hundred eleven billion, two hundred two million, two hundred twenty thousand, one hundred twenty-two".