2220211202121 has 40 divisors (see below), whose sum is σ = 3651936339744. Its totient is φ = 1333006951680.

The previous prime is 2220211202089. The next prime is 2220211202171. The reversal of 2220211202121 is 1212021120222.

It is a happy number.

2220211202121 is a `hidden beast` number, since 2 + 220 + 211 + 20 + 212 + 1 = 666.

It is not a de Polignac number, because 2220211202121 - 2⁵ = 2220211202089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220211202094 and 2220211202103.

It is not an unprimeable number, because it can be changed into a prime (2220211202171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11548680 + ... + 11739353.

Almost surely, 2^{2220211202121} is an apocalyptic number.

It is an amenable number.

2220211202121 is a deficient number, since it is larger than the sum of its proper divisors (1431725137623).

2220211202121 is a wasteful number, since it uses less digits than its factorization.

2220211202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288163 (or 23288154 counting only the distinct ones).

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

Adding to 2220211202121 its reverse (1212021120222), we get a palindrome (3432232322343).

The spelling of 2220211202121 in words is "two trillion, two hundred twenty billion, two hundred eleven million, two hundred two thousand, one hundred twenty-one".