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2111112020001 = 31395233967441
BaseRepresentation
bin11110101110001000000…
…101010000000000100001
321110211011000201022000010
4132232020011100000201
5234042024134120001
64253455333115133
7305344216043235
oct36561005200041
97424130638003
102111112020001
11744354775a96
122a1193188aa9
1312410026007a
147426d6205c5
1539daca328d6
hex1eb88150021

2111112020001 has 16 divisors (see below), whose sum is σ = 2835611199680. Its totient is φ = 1397014318080.

The previous prime is 2111112019979. The next prime is 2111112020027. The reversal of 2111112020001 is 1000202111112.

It is not a de Polignac number, because 2111112020001 - 26 = 2111112019937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111112020071) 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, 1698441 + ... + 2665881.

It is an arithmetic number, because the mean of its divisors is an integer number (177225699980).

Almost surely, 22111112020001 is an apocalyptic number.

It is an amenable number.

2111112020001 is a deficient number, since it is larger than the sum of its proper divisors (724499179679).

2111112020001 is a wasteful number, since it uses less digits than its factorization.

2111112020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972816.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2111112020001 its reverse (1000202111112), we get a palindrome (3111314131113).

The spelling of 2111112020001 in words is "two trillion, one hundred eleven billion, one hundred twelve million, twenty thousand, one".

Divisors: 1 3 139 417 5233 15699 727387 967441 2182161 2902323 134474299 403422897 5062618753 15187856259 703704006667 2111112020001