2210202020221 has 8 divisors (see below), whose sum is σ = 2380906129784. Its totient is φ = 2039596277760.

The previous prime is 2210202020203. The next prime is 2210202020267. The reversal of 2210202020221 is 1220202020122.

It can be written as a sum of positive squares in 4 ways, for example, as 385406297721 + 1824795722500 = 620811^2 + 1350850^2 .

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 2210202020221 - 2⁹ = 2210202019709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210202020195 and 2210202020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210202020281) 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, 24545100 + ... + 24634981.

It is an arithmetic number, because the mean of its divisors is an integer number (297613266223).

Almost surely, 2^{2210202020221} is an apocalyptic number.

It is an amenable number.

2210202020221 is a deficient number, since it is larger than the sum of its proper divisors (170704109563).

2210202020221 is a wasteful number, since it uses less digits than its factorization.

2210202020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49183551.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2210202020221 its reverse (1220202020122), we get a palindrome (3430404040343).

Subtracting from 2210202020221 its reverse (1220202020122), we obtain a palindrome (990000000099).

The spelling of 2210202020221 in words is "two trillion, two hundred ten billion, two hundred two million, twenty thousand, two hundred twenty-one".