12221020110 has 64 divisors (see below), whose sum is σ = 32321253888. Its totient is φ = 2938287744.

The previous prime is 12221020093. The next prime is 12221020127. The reversal of 12221020110 is 1102012221.

It is an interprime number because it is at equal distance from previous prime (12221020093) and next prime (12221020127).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347602 + ... + 381141.

It is an arithmetic number, because the mean of its divisors is an integer number (505019592).

Almost surely, 2^12221020110 is an apocalyptic number.

12221020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221020110 is an abundant number, since it is smaller than the sum of its proper divisors (20100233778).

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

12221020110 is a wasteful number, since it uses less digits than its factorization.

12221020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728809.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12221020110 its reverse (1102012221), we get a palindrome (13323032331).

It can be divided in two parts, 12 and 221020110, that added together give a palindrome (221020122).

The spelling of 12221020110 in words is "twelve billion, two hundred twenty-one million, twenty thousand, one hundred ten".