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10003211021 = 83111203611
BaseRepresentation
bin10010101000011110…
…01110001100001101
3221211010210202211002
421110033032030031
5130441310223041
64332335310045
7502613614346
oct112417161415
927733722732
1010003211021
114273608551
121b3207b325
13c35572b9b
146ac75b0cd
153d82e459b
hex2543ce30d

10003211021 has 4 divisors (see below), whose sum is σ = 10004422944. Its totient is φ = 10001999100.

The previous prime is 10003211003. The next prime is 10003211041. The reversal of 10003211021 is 12011230001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12011230001 = 29741403861.

It is a cyclic number.

It is not a de Polignac number, because 10003211021 - 218 = 10002948877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10003210993 and 10003211011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10003211041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593495 + ... + 610116.

It is an arithmetic number, because the mean of its divisors is an integer number (2501105736).

Almost surely, 210003211021 is an apocalyptic number.

It is an amenable number.

10003211021 is a deficient number, since it is larger than the sum of its proper divisors (1211923).

10003211021 is an equidigital number, since it uses as much as digits as its factorization.

10003211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211922.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10003211021 its reverse (12011230001), we get a palindrome (22014441022).

The spelling of 10003211021 in words is "ten billion, three million, two hundred eleven thousand, twenty-one".

Divisors: 1 8311 1203611 10003211021