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2111201020201 = 71325930247733
BaseRepresentation
bin11110101110001101011…
…000110000100100101001
321110211101020011222022211
4132232031120300210221
5234042214430121301
64253512232445121
7305346346403110
oct36561530604451
97424336158284
102111201020201
1174439aa34179
122a11b8b497a1
13124115821c00
147427b38ac77
1539db5763051
hex1eb8d630929

2111201020201 has 24 divisors (see below), whose sum is σ = 2656960954560. Its totient is φ = 1642088874816.

The previous prime is 2111201020199. The next prime is 2111201020207. The reversal of 2111201020201 is 1020201021112.

It is not a de Polignac number, because 2111201020201 - 21 = 2111201020199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111201020207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15054070 + ... + 15193663.

It is an arithmetic number, because the mean of its divisors is an integer number (110706706440).

Almost surely, 22111201020201 is an apocalyptic number.

It is an amenable number.

2111201020201 is a deficient number, since it is larger than the sum of its proper divisors (545759934359).

2111201020201 is a wasteful number, since it uses less digits than its factorization.

2111201020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30247825 (or 30247812 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2111201020201 its reverse (1020201021112), we get a palindrome (3131402041313).

It can be divided in two parts, 211120 and 1020201, that added together give a palindrome (1231321).

The spelling of 2111201020201 in words is "two trillion, one hundred eleven billion, two hundred one million, twenty thousand, two hundred one".

Divisors: 1 7 13 59 91 169 413 767 1183 5369 9971 69797 30247733 211734131 393220529 1784616247 2752543703 5111866877 12492313729 23200011211 35783068139 162400078477 301600145743 2111201020201