121212122022212 has 24 divisors (see below), whose sum is σ = 241875772905816. Its totient is φ = 52653229475328.

The previous prime is 121212122022193. The next prime is 121212122022239. The reversal of 121212122022212 is 212220221212121.

It can be written as a sum of positive squares in 4 ways, for example, as 26931595268356 + 94280526753856 = 5189566^2 + 9709816^2 .

It is a super-2 number, since 2×121212122022212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68558891663 + ... + 68558893430.

It is an arithmetic number, because the mean of its divisors is an integer number (10078157204409).

Almost surely, 2^{121212122022212} is an apocalyptic number.

It is an amenable number.

121212122022212 is a deficient number, since it is larger than the sum of its proper divisors (120663650883604).

121212122022212 is a wasteful number, since it uses less digits than its factorization.

121212122022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137117785127 (or 137117785125 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121212122022212 its reverse (212220221212121), we get a palindrome (333432343234333).

The spelling of 121212122022212 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred twenty-two million, twenty-two thousand, two hundred twelve".