21120121002212 has 12 divisors (see below), whose sum is σ = 37034280318000. Its totient is φ = 10538898054216.

The previous prime is 21120121002209. The next prime is 21120121002287. The reversal of 21120121002212 is 21220012102112.

It is a super-2 number, since 2×21120121002212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5290609478 + ... + 5290613469.

It is an arithmetic number, because the mean of its divisors is an integer number (3086190026500).

Almost surely, 2^{21120121002212} is an apocalyptic number.

It is an amenable number.

21120121002212 is a deficient number, since it is larger than the sum of its proper divisors (15914159315788).

21120121002212 is a wasteful number, since it uses less digits than its factorization.

21120121002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10581223450 (or 10581223448 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21120121002212 its reverse (21220012102112), we get a palindrome (42340133104324).

The spelling of 21120121002212 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty-one million, two thousand, two hundred twelve".