2220201021 has 8 divisors (see below), whose sum is σ = 3040275424. Its totient is φ = 1440130320.

The previous prime is 2220201019. The next prime is 2220201023. The reversal of 2220201021 is 1201020222.

It is an interprime number because it is at equal distance from previous prime (2220201019) and next prime (2220201023).

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

It is not a de Polignac number, because 2220201021 - 2¹ = 2220201019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220200988 and 2220201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220201023) 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, 10000795 + ... + 10001016.

It is an arithmetic number, because the mean of its divisors is an integer number (380034428).

Almost surely, 2^2220201021 is an apocalyptic number.

It is an amenable number.

2220201021 is a deficient number, since it is larger than the sum of its proper divisors (820074403).

2220201021 is a wasteful number, since it uses less digits than its factorization.

2220201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001851.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2220201021 is about 47119.0091258295. The cubic root of 2220201021 is about 1304.5601236167.

Adding to 2220201021 its reverse (1201020222), we get a palindrome (3421221243).

The spelling of 2220201021 in words is "two billion, two hundred twenty million, two hundred one thousand, twenty-one".