201200002020021 has 16 divisors (see below), whose sum is σ = 278245012174848. Its totient is φ = 129215949912000.

The previous prime is 201200002020011. The next prime is 201200002020137. The reversal of 201200002020021 is 120020200002102.

It is not a de Polignac number, because 201200002020021 - 2³³ = 201191412085429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201200002019979 and 201200002020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200002020011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8973318645 + ... + 8973341066.

It is an arithmetic number, because the mean of its divisors is an integer number (17390313260928).

Almost surely, 2^{201200002020021} is an apocalyptic number.

It is an amenable number.

201200002020021 is a deficient number, since it is larger than the sum of its proper divisors (77045010154827).

201200002020021 is a wasteful number, since it uses less digits than its factorization.

201200002020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17946659852.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201200002020021 its reverse (120020200002102), we get a palindrome (321220202022123).

The spelling of 201200002020021 in words is "two hundred one trillion, two hundred billion, two million, twenty thousand, twenty-one".