1212321012122 has 8 divisors (see below), whose sum is σ = 1983798019872. Its totient is φ = 551055005500.

The previous prime is 1212321012061. The next prime is 1212321012139. The reversal of 1212321012122 is 2212101232121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1212321012094 and 1212321012103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27552750254 + ... + 27552750297.

It is an arithmetic number, because the mean of its divisors is an integer number (247974752484).

Almost surely, 2^{1212321012122} is an apocalyptic number.

1212321012122 is a deficient number, since it is larger than the sum of its proper divisors (771477007750).

1212321012122 is a wasteful number, since it uses less digits than its factorization.

1212321012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55105500564.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1212321012122 its reverse (2212101232121), we get a palindrome (3424422244243).

The spelling of 1212321012122 in words is "one trillion, two hundred twelve billion, three hundred twenty-one million, twelve thousand, one hundred twenty-two".