2221110100021 has 8 divisors (see below), whose sum is σ = 2303183887200. Its totient is φ = 2139401898480.

The previous prime is 2221110100019. The next prime is 2221110100031. The reversal of 2221110100021 is 1200010111222.

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 2221110100021 - 2¹ = 2221110100019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221110099974 and 2221110100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221110100031) 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, 91384035 + ... + 91408336.

It is an arithmetic number, because the mean of its divisors is an integer number (287897985900).

Almost surely, 2^{2221110100021} is an apocalyptic number.

It is an amenable number.

2221110100021 is a deficient number, since it is larger than the sum of its proper divisors (82073787179).

2221110100021 is a wasteful number, since it uses less digits than its factorization.

2221110100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182792819.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2221110100021 its reverse (1200010111222), we get a palindrome (3421120211243).

The spelling of 2221110100021 in words is "two trillion, two hundred twenty-one billion, one hundred ten million, one hundred thousand, twenty-one".