12221132210 has 64 divisors (see below), whose sum is σ = 26984316672. Its totient is φ = 3889575936.

The previous prime is 12221132167. The next prime is 12221132213. The reversal of 12221132210 is 1223112221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (12221132213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16529 + ... + 157211.

It is an arithmetic number, because the mean of its divisors is an integer number (421629948).

Almost surely, 2^12221132210 is an apocalyptic number.

12221132210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221132210 is an abundant number, since it is smaller than the sum of its proper divisors (14763184462).

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

12221132210 is a wasteful number, since it uses less digits than its factorization.

12221132210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140787.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12221132210 its reverse (1223112221), we get a palindrome (13444244431).

The spelling of 12221132210 in words is "twelve billion, two hundred twenty-one million, one hundred thirty-two thousand, two hundred ten".