12122212210122 has 128 divisors (see below), whose sum is σ = 29125048393728. Its totient is φ = 3291441753600.

The previous prime is 12122212210091. The next prime is 12122212210181. The reversal of 12122212210122 is 22101221222121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16722148 + ... + 17432000.

It is an arithmetic number, because the mean of its divisors is an integer number (227539440576).

Almost surely, 2^{12122212210122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122212210122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14562524196864).

12122212210122 is an abundant number, since it is smaller than the sum of its proper divisors (17002836183606).

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

12122212210122 is a wasteful number, since it uses less digits than its factorization.

12122212210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710164.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122212210122 its reverse (22101221222121), we get a palindrome (34223433432243).

The spelling of 12122212210122 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million, two hundred ten thousand, one hundred twenty-two".