201202020009 has 64 divisors (see below), whose sum is σ = 304122470400. Its totient is φ = 131445144576.

The previous prime is 201202019983. The next prime is 201202020049. The reversal of 201202020009 is 900020202102.

It is not a de Polignac number, because 201202020009 - 2²¹ = 201199922857 is a prime.

It is a super-3 number, since 3×201202020009³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201202019973 and 201202020000.

It is not an unprimeable number, because it can be changed into a prime (201202020049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279835552 + ... + 279836270.

It is an arithmetic number, because the mean of its divisors is an integer number (4751913600).

Almost surely, 2^201202020009 is an apocalyptic number.

It is an amenable number.

201202020009 is a deficient number, since it is larger than the sum of its proper divisors (102920450391).

201202020009 is a wasteful number, since it uses less digits than its factorization.

201202020009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1645 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The spelling of 201202020009 in words is "two hundred one billion, two hundred two million, twenty thousand, nine".