20020221202001 has 16 divisors (see below), whose sum is σ = 21179595961728. Its totient is φ = 18886399488000.

The previous prime is 20020221201973. The next prime is 20020221202013. The reversal of 20020221202001 is 10020212202002.

It is a cyclic number.

It is not a de Polignac number, because 20020221202001 - 2³⁰ = 20019147460177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020221232001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16170035 + ... + 17364056.

It is an arithmetic number, because the mean of its divisors is an integer number (1323724747608).

Almost surely, 2^{20020221202001} is an apocalyptic number.

It is an amenable number.

20020221202001 is a deficient number, since it is larger than the sum of its proper divisors (1159374759727).

20020221202001 is a wasteful number, since it uses less digits than its factorization.

20020221202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33534472.

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

Adding to 20020221202001 its reverse (10020212202002), we get a palindrome (30040433404003).

It can be divided in two parts, 2002022 and 1202001, that added together give a palindrome (3204023).

The spelling of 20020221202001 in words is "twenty trillion, twenty billion, two hundred twenty-one million, two hundred two thousand, one".