1222121212122 has 64 divisors (see below), whose sum is σ = 2662824979584. Its totient is φ = 372410972160.

The previous prime is 1222121212087. The next prime is 1222121212133. The reversal of 1222121212122 is 2212121212221.

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

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, 305628 + ... + 1593000.

It is an arithmetic number, because the mean of its divisors is an integer number (41606640306).

Almost surely, 2^{1222121212122} is an apocalyptic number.

1222121212122 is an abundant number, since it is smaller than the sum of its proper divisors (1440703767462).

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

1222121212122 is a wasteful number, since it uses less digits than its factorization.

1222121212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287663.

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

Adding to 1222121212122 its reverse (2212121212221), we get a palindrome (3434242424343).

Subtracting 1222121212122 from its reverse (2212121212221), we obtain a palindrome (990000000099).

The spelling of 1222121212122 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".