20000212121009 has 8 divisors (see below), whose sum is σ = 21053071956000. Its totient is φ = 18947373995232.

The previous prime is 20000212120981. The next prime is 20000212121023. The reversal of 20000212121009 is 90012121200002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000212121009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000212121059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3519044 + ... + 7237685.

It is an arithmetic number, because the mean of its divisors is an integer number (2631633994500).

Almost surely, 2^{20000212121009} is an apocalyptic number.

It is an amenable number.

20000212121009 is a deficient number, since it is larger than the sum of its proper divisors (1052859834991).

20000212121009 is a wasteful number, since it uses less digits than its factorization.

20000212121009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10854607.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 20000212121009 in words is "twenty trillion, two hundred twelve million, one hundred twenty-one thousand, nine".