2220120122121 has 48 divisors (see below), whose sum is σ = 3574752749568. Its totient is φ = 1316181016800.

The previous prime is 2220120122107. The next prime is 2220120122137. The reversal of 2220120122121 is 1212210210222.

It is a happy number.

2220120122121 is a `hidden beast` number, since 2 + 220 + 1 + 201 + 221 + 21 = 666.

It is not a de Polignac number, because 2220120122121 - 2¹³ = 2220120113929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2220120122094 and 2220120122103.

It is not an unprimeable number, because it can be changed into a prime (2220120122191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8464926 + ... + 8723256.

It is an arithmetic number, because the mean of its divisors is an integer number (74474015616).

Almost surely, 2^{2220120122121} is an apocalyptic number.

It is an amenable number.

2220120122121 is a deficient number, since it is larger than the sum of its proper divisors (1354632627447).

2220120122121 is a wasteful number, since it uses less digits than its factorization.

2220120122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260242 (or 260239 counting only the distinct ones).

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

Adding to 2220120122121 its reverse (1212210210222), we get a palindrome (3432330332343).

The spelling of 2220120122121 in words is "two trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".