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1000201021 = 19109348163
BaseRepresentation
bin111011100111011…
…101101100111101
32120201001110212021
4323213131230331
54022022413041
6243125440141
733533365651
oct7347355475
92521043767
101000201021
11473650916
1223ab70051
1312c2aa831
1496ba0a61
155cc20cd1
hex3b9ddb3d

1000201021 has 8 divisors (see below), whose sum is σ = 1053828320. Its totient is φ = 946672272.

The previous prime is 1000201009. The next prime is 1000201043. The reversal of 1000201021 is 1201020001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1000201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000200995 and 1000201013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000201421) 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, 3315 + ... + 44848.

It is an arithmetic number, because the mean of its divisors is an integer number (131728540).

Almost surely, 21000201021 is an apocalyptic number.

It is an amenable number.

1000201021 is a deficient number, since it is larger than the sum of its proper divisors (53627299).

1000201021 is a wasteful number, since it uses less digits than its factorization.

1000201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49275.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1000201021 is about 31625.9548630551. The cubic root of 1000201021 is about 1000.0670025106.

Adding to 1000201021 its reverse (1201020001), we get a palindrome (2201221022).

The spelling of 1000201021 in words is "one billion, two hundred one thousand, twenty-one".

Divisors: 1 19 1093 20767 48163 915097 52642159 1000201021