12211211010 has 128 divisors (see below), whose sum is σ = 31950526464. Its totient is φ = 2974371840.

The previous prime is 12211211009. The next prime is 12211211011. The reversal of 12211211010 is 1011211221.

It is an interprime number because it is at equal distance from previous prime (12211211009) and next prime (12211211011).

It is a super-2 number, since 2×12211211010² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211211011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12321615 + ... + 12322605.

It is an arithmetic number, because the mean of its divisors is an integer number (249613488).

Almost surely, 2^12211211010 is an apocalyptic number.

12211211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211211010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15975263232).

12211211010 is an abundant number, since it is smaller than the sum of its proper divisors (19739315454).

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

12211211010 is a wasteful number, since it uses less digits than its factorization.

12211211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211211010 its reverse (1011211221), we get a palindrome (13222422231).

The spelling of 12211211010 in words is "twelve billion, two hundred eleven million, two hundred eleven thousand, ten".