12122112212122 has 64 divisors (see below), whose sum is σ = 20029544552448. Its totient is φ = 5456594520000.

The previous prime is 12122112212113. The next prime is 12122112212137. The reversal of 12122112212122 is 22121221122121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12122112212093 and 12122112212102.

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, 1498958763 + ... + 1498966849.

It is an arithmetic number, because the mean of its divisors is an integer number (312961633632).

Almost surely, 2^{12122112212122} is an apocalyptic number.

12122112212122 is a deficient number, since it is larger than the sum of its proper divisors (7907432340326).

12122112212122 is a wasteful number, since it uses less digits than its factorization.

12122112212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9595.

The product of its digits is 256, while the sum is 22.

Adding to 12122112212122 its reverse (22121221122121), we get a palindrome (34243333334243).

It can be divided in two parts, 121221122121 and 22, that multiplied together give a palindrome (2666864686662).

The spelling of 12122112212122 in words is "twelve trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-two".