20120020220021 has 8 divisors (see below), whose sum is σ = 21042627872640. Its totient is φ = 19201397914512.

The previous prime is 20120020219963. The next prime is 20120020220071. The reversal of 20120020220021 is 12002202002102.

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

It is a cyclic number.

It is not a de Polignac number, because 20120020220021 - 2²² = 20120016025717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20120020219978 and 20120020220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120020220071) 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, 996326450 + ... + 996346643.

It is an arithmetic number, because the mean of its divisors is an integer number (2630328484080).

Almost surely, 2^{20120020220021} is an apocalyptic number.

It is an amenable number.

20120020220021 is a deficient number, since it is larger than the sum of its proper divisors (922607652619).

20120020220021 is a wasteful number, since it uses less digits than its factorization.

20120020220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992673555.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20120020220021 its reverse (12002202002102), we get a palindrome (32122222222123).

The spelling of 20120020220021 in words is "twenty trillion, one hundred twenty billion, twenty million, two hundred twenty thousand, twenty-one".