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101121019 = 25721531
BaseRepresentation
bin1100000011011…
…11101111111011
321001021110221221
412001233233323
5201341333034
614011212511
72335341316
oct601575773
9231243857
10101121019
115209779a
1229a47137
1317c46b2c
14d60397d
158d26bb4
hex606fbfb

101121019 has 6 divisors (see below), whose sum is σ = 101582324. Its totient is φ = 100661760.

The previous prime is 101121011. The next prime is 101121067. The reversal of 101121019 is 910121101.

It is not a de Polignac number, because 101121019 - 23 = 101121011 is a prime.

It is a super-2 number, since 2×1011210192 = 20450920967196722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101120993 and 101121011.

It is not an unprimeable number, because it can be changed into a prime (101121011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65284 + ... + 66814.

Almost surely, 2101121019 is an apocalyptic number.

101121019 is a deficient number, since it is larger than the sum of its proper divisors (461305).

101121019 is an frugal number, since it uses more digits than its factorization.

101121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 101121019 is about 10055.8947389081. The cubic root of 101121019 is about 465.8868787293.

The spelling of 101121019 in words is "one hundred one million, one hundred twenty-one thousand, nineteen".

Divisors: 1 257 1531 66049 393467 101121019