2220110220121 has 4 divisors (see below), whose sum is σ = 2220154888932. Its totient is φ = 2220065551312.

The previous prime is 2220110220113. The next prime is 2220110220143. The reversal of 2220110220121 is 1210220110222.

It is a happy number.

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 17275422096 + 2202834798025 = 131436^2 + 1484195^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220110220121 - 2³ = 2220110220113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220110220095 and 2220110220104.

It is not an unprimeable number, because it can be changed into a prime (2220110220221) 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, 22259770 + ... + 22359283.

It is an arithmetic number, because the mean of its divisors is an integer number (555038722233).

Almost surely, 2^{2220110220121} is an apocalyptic number.

It is an amenable number.

2220110220121 is a deficient number, since it is larger than the sum of its proper divisors (44668811).

2220110220121 is an equidigital number, since it uses as much as digits as its factorization.

2220110220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44668810.

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

Adding to 2220110220121 its reverse (1210220110222), we get a palindrome (3430330330343).

The spelling of 2220110220121 in words is "two trillion, two hundred twenty billion, one hundred ten million, two hundred twenty thousand, one hundred twenty-one".