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20030012101 = 118327779201
BaseRepresentation
bin10010101001111000…
…011011101011000101
31220200221000001010001
4102221320123223011
5312010140341401
613111320401301
71306235202511
oct225170335305
956627001101
1020030012101
118549468610
123a70016231
131b72985288
14d80299141
157c36e8601
hex4a9e1bac5

20030012101 has 16 divisors (see below), whose sum is σ = 22194301248. Its totient is φ = 17924544000.

The previous prime is 20030012099. The next prime is 20030012131. The reversal of 20030012101 is 10121003002.

It is not a de Polignac number, because 20030012101 - 21 = 20030012099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030012131) 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, 213301 + ... + 292501.

It is an arithmetic number, because the mean of its divisors is an integer number (1387143828).

Almost surely, 220030012101 is an apocalyptic number.

It is an amenable number.

20030012101 is a deficient number, since it is larger than the sum of its proper divisors (2164289147).

20030012101 is a wasteful number, since it uses less digits than its factorization.

20030012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79572.

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

Adding to 20030012101 its reverse (10121003002), we get a palindrome (30151015103).

Subtracting from 20030012101 its reverse (10121003002), we obtain a palindrome (9909009099).

The spelling of 20030012101 in words is "twenty billion, thirty million, twelve thousand, one hundred one".

Divisors: 1 11 83 277 913 3047 22991 79201 252901 871211 6573683 21938677 72310513 241325447 1820910191 20030012101