22000121120212 has 6 divisors (see below), whose sum is σ = 38500211960378. Its totient is φ = 11000060560104.

The previous prime is 22000121120179. The next prime is 22000121120269. The reversal of 22000121120212 is 21202112100022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21663774478096 + 336346642116 = 4654436^2 + 579954^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750015140023 + ... + 2750015140030.

Almost surely, 2^{22000121120212} is an apocalyptic number.

It is an amenable number.

22000121120212 is a deficient number, since it is larger than the sum of its proper divisors (16500090840166).

22000121120212 is a wasteful number, since it uses less digits than its factorization.

22000121120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500030280057 (or 5500030280055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22000121120212 its reverse (21202112100022), we get a palindrome (43202233220234).

The spelling of 22000121120212 in words is "twenty-two trillion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".