20000121000212 has 24 divisors (see below), whose sum is σ = 35025258143400. Its totient is φ = 9992904984576.

The previous prime is 20000121000199. The next prime is 20000121000227. The reversal of 20000121000212 is 21200012100002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 382698127876 + 19617422872336 = 618626^2 + 4429156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20000121000193 and 20000121000202.

It is a congruent number.

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, 167119148 + ... + 167238780.

It is an arithmetic number, because the mean of its divisors is an integer number (1459385755975).

Almost surely, 2^{20000121000212} is an apocalyptic number.

It is an amenable number.

20000121000212 is a deficient number, since it is larger than the sum of its proper divisors (15025137143188).

20000121000212 is a wasteful number, since it uses less digits than its factorization.

20000121000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149195 (or 149193 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20000121000212 its reverse (21200012100002), we get a palindrome (41200133100214).

The spelling of 20000121000212 in words is "twenty trillion, one hundred twenty-one million, two hundred twelve", and thus it is an aban number.