Search a number
100001121 = 3113781901
BaseRepresentation
bin1011111010111…
…10010101100001
320222011120202020
411331132111201
5201100013441
613531212053
72322665313
oct575362541
9228146666
10100001121
11514a2360
12295a7029
131794417c
14d3d17b3
158ba4e66
hex5f5e561

100001121 has 16 divisors (see below), whose sum is σ = 149389248. Its totient is φ = 58968000.

The previous prime is 100001119. The next prime is 100001131. The reversal of 100001121 is 121100001.

It is not a de Polignac number, because 100001121 - 21 = 100001119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100001131) 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, 39730 + ... + 42171.

It is an arithmetic number, because the mean of its divisors is an integer number (9336828).

Almost surely, 2100001121 is an apocalyptic number.

100001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100001121 is a deficient number, since it is larger than the sum of its proper divisors (49388127).

100001121 is a wasteful number, since it uses less digits than its factorization.

100001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81952.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 100001121 is about 10000.0560498429. The cubic root of 100001121 is about 464.1606177618.

Adding to 100001121 its reverse (121100001), we get a palindrome (221101122).

It can be divided in two parts, 100001 and 121, that multiplied together give a palindrome (12100121).

The spelling of 100001121 in words is "one hundred million, one thousand, one hundred twenty-one".