222121022110 has 32 divisors (see below), whose sum is σ = 445420412640. Its totient is φ = 79185848448.

The previous prime is 222121022107. The next prime is 222121022113. The reversal of 222121022110 is 11220121222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222121022107) and next prime (222121022113).

It is a super-2 number, since 2×222121022110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121022113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29455252 + ... + 29462791.

It is an arithmetic number, because the mean of its divisors is an integer number (13919387895).

Almost surely, 2^222121022110 is an apocalyptic number.

222121022110 is an abundant number, since it is smaller than the sum of its proper divisors (223299390530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222121022110 is a wasteful number, since it uses less digits than its factorization.

222121022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58918092.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222121022110 its reverse (11220121222), we get a palindrome (233341143332).

The spelling of 222121022110 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty-two thousand, one hundred ten".