2220110120021 has 8 divisors (see below), whose sum is σ = 2221176241944. Its totient is φ = 2219044262400.

The previous prime is 2220110119967. The next prime is 2220110120147. The reversal of 2220110120021 is 1200210110222.

It can be written as a sum of positive squares in 4 ways, for example, as 47687640625 + 2172422479396 = 218375^2 + 1473914^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220110120021 - 2¹⁰ = 2220110118997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220110119978 and 2220110120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220110125021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17889035 + ... + 18012711.

It is an arithmetic number, because the mean of its divisors is an integer number (277647030243).

Almost surely, 2^{2220110120021} is an apocalyptic number.

It is an amenable number.

2220110120021 is a deficient number, since it is larger than the sum of its proper divisors (1066121923).

2220110120021 is a wasteful number, since it uses less digits than its factorization.

2220110120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132151.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2220110120021 its reverse (1200210110222), we get a palindrome (3420320230243).

The spelling of 2220110120021 in words is "two trillion, two hundred twenty billion, one hundred ten million, one hundred twenty thousand, twenty-one".