2222121110 has 16 divisors (see below), whose sum is σ = 4363438032. Its totient is φ = 808044000.

The previous prime is 2222121107. The next prime is 2222121113. The reversal of 2222121110 is 111212222.

It is an interprime number because it is at equal distance from previous prime (2222121107) and next prime (2222121113).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10100441 + ... + 10100660.

It is an arithmetic number, because the mean of its divisors is an integer number (272714877).

Almost surely, 2^2222121110 is an apocalyptic number.

2222121110 is a deficient number, since it is larger than the sum of its proper divisors (2141316922).

2222121110 is a wasteful number, since it uses less digits than its factorization.

2222121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201119.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2222121110 is about 47139.3796098336. The cubic root of 2222121110 is about 1304.9360880411.

Adding to 2222121110 its reverse (111212222), we get a palindrome (2333333332).

It can be divided in two parts, 222212 and 1110, that added together give a palindrome (223322).

The spelling of 2222121110 in words is "two billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred ten".