220220222021 has 8 divisors (see below), whose sum is σ = 223046490240. Its totient is φ = 217398073312.

The previous prime is 220220222017. The next prime is 220220222029. The reversal of 220220222021 is 120222022022.

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 220220222021 - 2² = 220220222017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220222029) 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, 922205 + ... + 1136178.

It is an arithmetic number, because the mean of its divisors is an integer number (27880811280).

Almost surely, 2^220220222021 is an apocalyptic number.

It is an amenable number.

220220222021 is a deficient number, since it is larger than the sum of its proper divisors (2826268219).

220220222021 is a wasteful number, since it uses less digits than its factorization.

220220222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059755.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 220220222021 its reverse (120222022022), we get a palindrome (340442244043).

The spelling of 220220222021 in words is "two hundred twenty billion, two hundred twenty million, two hundred twenty-two thousand, twenty-one".