2220121002122 has 16 divisors (see below), whose sum is σ = 3527056100232. Its totient is φ = 1044471989760.

The previous prime is 2220121002109. The next prime is 2220121002133. The reversal of 2220121002122 is 2212001210222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1998092504521 + 222028497601 = 1413539^2 + 471199^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 2220121002122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8964629 + ... + 9208952.

Almost surely, 2^{2220121002122} is an apocalyptic number.

2220121002122 is a deficient number, since it is larger than the sum of its proper divisors (1306935098110).

2220121002122 is a wasteful number, since it uses less digits than its factorization.

2220121002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18177193.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2220121002122 its reverse (2212001210222), we get a palindrome (4432122212344).

The spelling of 2220121002122 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, one hundred twenty-two".