2101220222 has 16 divisors (see below), whose sum is σ = 3321170640. Its totient is φ = 994278528.

The previous prime is 2101220183. The next prime is 2101220227. The reversal of 2101220222 is 2220221012.

It is a junction number, because it is equal to n+sod(n) for n = 2101220197 and 2101220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101220227) 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, 8828 + ... + 65424.

It is an arithmetic number, because the mean of its divisors is an integer number (207573165).

Almost surely, 2^2101220222 is an apocalyptic number.

2101220222 is a deficient number, since it is larger than the sum of its proper divisors (1219950418).

2101220222 is a wasteful number, since it uses less digits than its factorization.

2101220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57595.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2101220222 is about 45839.0687296328. The cubic root of 2101220222 is about 1280.8271472598.

Adding to 2101220222 its reverse (2220221012), we get a palindrome (4321441234).

The spelling of 2101220222 in words is "two billion, one hundred one million, two hundred twenty thousand, two hundred twenty-two".