2220221101021 has 32 divisors (see below), whose sum is σ = 2963141452800. Its totient is φ = 1611208039680.

The previous prime is 2220221101009. The next prime is 2220221101117. The reversal of 2220221101021 is 1201011220222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2220221101021 - 2⁵ = 2220221100989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220221100986 and 2220221101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220221101121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12774540 + ... + 12947173.

It is an arithmetic number, because the mean of its divisors is an integer number (92598170400).

Almost surely, 2^{2220221101021} is an apocalyptic number.

It is an amenable number.

2220221101021 is a deficient number, since it is larger than the sum of its proper divisors (742920351779).

2220221101021 is a wasteful number, since it uses less digits than its factorization.

2220221101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25721809.

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

Adding to 2220221101021 its reverse (1201011220222), we get a palindrome (3421232321243).

The spelling of 2220221101021 in words is "two trillion, two hundred twenty billion, two hundred twenty-one million, one hundred one thousand, twenty-one".