201013021 has 8 divisors (see below), whose sum is σ = 226361088. Its totient is φ = 176844000.

The previous prime is 201013013. The next prime is 201013063. The reversal of 201013021 is 120310102.

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 201013021 - 2³ = 201013013 is a prime.

It is a super-2 number, since 2×201013021² = 80812469223092882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201012989 and 201013007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201043021) 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 7 ways as a sum of consecutive naturals, for example, 294400 + ... + 295081.

It is an arithmetic number, because the mean of its divisors is an integer number (28295136).

Almost surely, 2^201013021 is an apocalyptic number.

It is an amenable number.

201013021 is a deficient number, since it is larger than the sum of its proper divisors (25348067).

201013021 is a wasteful number, since it uses less digits than its factorization.

201013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589523.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201013021 is about 14177.9060865842. The cubic root of 201013021 is about 585.7892490750.

Adding to 201013021 its reverse (120310102), we get a palindrome (321323123).

The spelling of 201013021 in words is "two hundred one million, thirteen thousand, twenty-one".