2220201012121 has 4 divisors (see below), whose sum is σ = 2220507127332. Its totient is φ = 2219894896912.

The previous prime is 2220201012119. The next prime is 2220201012137. The reversal of 2220201012121 is 1212101020222.

It is a happy number.

2220201012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1960529235721 + 259671776400 = 1400189^2 + 509580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220201012121 - 2¹ = 2220201012119 is a prime.

It is a super-2 number, since 2×2220201012121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220201012095 and 2220201012104.

It is not an unprimeable number, because it can be changed into a prime (2220201012181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153046726 + ... + 153061231.

It is an arithmetic number, because the mean of its divisors is an integer number (555126781833).

Almost surely, 2^{2220201012121} is an apocalyptic number.

It is an amenable number.

2220201012121 is a deficient number, since it is larger than the sum of its proper divisors (306115211).

2220201012121 is an equidigital number, since it uses as much as digits as its factorization.

2220201012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306115210.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2220201012121 its reverse (1212101020222), we get a palindrome (3432302032343).

The spelling of 2220201012121 in words is "two trillion, two hundred twenty billion, two hundred one million, twelve thousand, one hundred twenty-one".