2211121102122 has 12 divisors (see below), whose sum is σ = 4790762387970. Its totient is φ = 737040367368.

The previous prime is 2211121102121. The next prime is 2211121102129. The reversal of 2211121102122 is 2212011211122.

It can be written as a sum of positive squares in only one way, i.e., 1380345364161 + 830775737961 = 1174881^2 + 911469^2 .

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: 122840061229 = 2211121102122 / (2 + 2 + 1 + 1 + 1 + 2 + 1 + 1 + 0 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2211121102095 and 2211121102104.

It is not an unprimeable number, because it can be changed into a prime (2211121102121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61420030597 + ... + 61420030632.

Almost surely, 2^{2211121102122} is an apocalyptic number.

2211121102122 is an abundant number, since it is smaller than the sum of its proper divisors (2579641285848).

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

2211121102122 is a wasteful number, since it uses less digits than its factorization.

2211121102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122840061237 (or 122840061234 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211121102122 its reverse (2212011211122), we get a palindrome (4423132313244).

The spelling of 2211121102122 in words is "two trillion, two hundred eleven billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty-two".