2220121120122 has 12 divisors (see below), whose sum is σ = 4810262426970. Its totient is φ = 740040373368.

The previous prime is 2220121120079. The next prime is 2220121120141. The reversal of 2220121120122 is 2210211210222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1382714940321 + 837406179801 = 1175889^2 + 915099^2 .

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: 123340062229 = 2220121120122 / (2 + 2 + 2 + 0 + 1 + 2 + 1 + 1 + 2 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2220121120095 and 2220121120104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61670031097 + ... + 61670031132.

Almost surely, 2^{2220121120122} is an apocalyptic number.

2220121120122 is an abundant number, since it is smaller than the sum of its proper divisors (2590141306848).

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

2220121120122 is a wasteful number, since it uses less digits than its factorization.

2220121120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123340062237 (or 123340062234 counting only the distinct ones).

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

Adding to 2220121120122 its reverse (2210211210222), we get a palindrome (4430332330344).

The spelling of 2220121120122 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twenty-two".