20000212112121 has 32 divisors (see below), whose sum is σ = 26777189107200. Its totient is φ = 13278463881984.

The previous prime is 20000212112107. The next prime is 20000212112129. The reversal of 20000212112121 is 12121121200002.

It is not a de Polignac number, because 20000212112121 - 2¹⁷ = 20000211981049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000212112121.

It is not an unprimeable number, because it can be changed into a prime (20000212112129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5357676171 + ... + 5357679903.

It is an arithmetic number, because the mean of its divisors is an integer number (836787159600).

Almost surely, 2^{20000212112121} is an apocalyptic number.

It is an amenable number.

20000212112121 is a deficient number, since it is larger than the sum of its proper divisors (6776976995079).

20000212112121 is a wasteful number, since it uses less digits than its factorization.

20000212112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20000212112121 its reverse (12121121200002), we get a palindrome (32121333312123).

The spelling of 20000212112121 in words is "twenty trillion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".