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10001232101 = 71428747443
BaseRepresentation
bin10010101000001111…
…01011000011100101
3221211000002020020202
421110013223003211
5130440303411401
64332225040245
7502561033040
oct112407530345
927730066222
1010001232101
114272486783
121b31486085
13c3502c223
146ac3a3c57
153d805306b
hex2541eb0e5

10001232101 has 4 divisors (see below), whose sum is σ = 11429979552. Its totient is φ = 8572484652.

The previous prime is 10001232097. The next prime is 10001232139. The reversal of 10001232101 is 10123210001.

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: 10123210001 = 41246907561.

It is a cyclic number.

It is not a de Polignac number, because 10001232101 - 22 = 10001232097 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 (10001232151) 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, 714373715 + ... + 714373728.

It is an arithmetic number, because the mean of its divisors is an integer number (2857494888).

Almost surely, 210001232101 is an apocalyptic number.

It is an amenable number.

10001232101 is a deficient number, since it is larger than the sum of its proper divisors (1428747451).

10001232101 is an equidigital number, since it uses as much as digits as its factorization.

10001232101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428747450.

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

Adding to 10001232101 its reverse (10123210001), we get a palindrome (20124442102).

The spelling of 10001232101 in words is "ten billion, one million, two hundred thirty-two thousand, one hundred one".

Divisors: 1 7 1428747443 10001232101