12122211210 has 64 divisors (see below), whose sum is σ = 29977782912. Its totient is φ = 3134889216.

The previous prime is 12122211187. The next prime is 12122211217. The reversal of 12122211210 is 1211222121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12122211210.

It is not an unprimeable number, because it can be changed into a prime (12122211217) 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, 322984 + ... + 358556.

It is an arithmetic number, because the mean of its divisors is an integer number (468402858).

Almost surely, 2^12122211210 is an apocalyptic number.

12122211210 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 12122211210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14988891456).

12122211210 is an abundant number, since it is smaller than the sum of its proper divisors (17855571702).

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

12122211210 is a wasteful number, since it uses less digits than its factorization.

12122211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35927.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12122211210 its reverse (1211222121), we get a palindrome (13333433331).

The spelling of 12122211210 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred ten".